Saicho Katamichi Kippu (最長片道切符), or the longest one-way ticket is the one-way ticket issued by a railway operator that has the longest route traveled in terms of the fare calculation kilometer. While every railway operator has its own longest one-way ticket, it generally refers to the one issued by JR Group Companies that have succeeded the railway network of the Japanese National Railways (JNR) and calculate fares by aggregating the fare calculation km of the route of each group company traveled.
Ryokaku Eigyou Kisoku (旅客営業規則) of JR Group, or Passenger Service Rule (Rule) provides that a one-way ticket is issued for a one-way travel on a section where the route for fare calculation is continuous. The continuous route terminates at a station where the route completes a loop or turns back. Accordingly, the longest one-way ticket is the one-way ticket that has the longest route in terms of the fare calculation km between the starting and terminating stations, among those routes eligible for one-way tickets, or drawn with one stroke without duplication irrespective of the shape of the route.
As far as known, the first JNR travel using the longest one-way ticket was accomplished in 1961 by a team of four embers of University of Tokyo Travel Club. They traveled a journey of the 12,145.3 km from Kaigata (海潟) station of Furue line (古江線) in Kagoshima to Hiroo (広尾) station of Hiroo line in Hokkaido in 25 days. (Both Furue and Hiroo lines were abandoned since then.) Its record is found in a book "Nihon no Hakken" (日本の発見), or Discovery of Japan, published by Chuo Koronsha (中央公論社) in 1962.
Late Shunzo Miyawaki (宮脇俊三), a respected railway travel writer, made the 13,267.2 km longest one-way trip in 1978 from Hiroo to Makurazaki (枕崎), Kagoshima and wrote a book on "Saicho Katamichi Kippu no Tabi" (最長片道切符の旅) published by Shinchosha (新潮社) in 1979. This was his second book following "Jikokuhyo 20,000 km" (時刻表2万キロ) on his Kanjo trip and made the longest one-way ticket known by ordinary people, not only among Noritetsu (乗り鉄) or train riding buffs.
Mr. Takaya Kasai (葛西隆也), when he was a master's course student and a member of rail fan club at the University of Tokyo in 2000, made the route search by mathematically strict methods using a computer together with his co-researcher. Then Mr. Kasai traveled their searched 11,925.9km route between Wakkanai (稚内) and Hizen-Yamaguchi (肥前山口) with the funds contributed by his friends. The process of the route search and travel is reported in his web page (Japanese).
The longest one-way ticket of JNR was longest for about one week between June 23 and June 30, 1982. On June 23, 1982 Tohoku Shinkansen (東北新幹線)opened and on July 1 Nihori ferry line (仁堀航路) was discontinued. By the closure of Nihori ferry, which ran between Nikata (仁方) station of Kure line and Horie (堀江) station of Yosan line, Uko ferry line (宇高航路) between Uno (宇野) and Takamatsu (高松) became only one route connecting Honshu with Shikoku and the JNR lines in Shikoku were no longer the route traveled by the longest one-way ticket. Thus the total length of the ticket was substantially reduced.
Enforcement of JNR Reform Law in 1981 made many local line discontinued or transferred to third sector companies. The discontinued or transferred lines were extended to those consisting the network such as Nayoro line (名寄線) and the total length was further reduced. Recently, the transfer of conventional lines parallel to Shinkansen to third sector affects the route and length of the ticket.
In the model chart only one route either (a) or (b) can be used to move from Block A to Block B. Thus, Block A and Block B is divided by the vertical (red) line. In Block A the two longest routes passing either (a) or (b) are considered. So are in Block B. Then the two longest routes of Blocks A and B are combined and the longer of passing either (a) or (b) is selected.
In 1980's attempt to use computers for the longest one-way route search started. But using a computer in a route search was not necessarily intended to obtain the answer in mathematically strict way. The questioned problems were often simplified by putting several assumptions, such that the route starts in Hokkaido and terminates in Kyushu, or vice versa, that is not mathematically verified.
Mr. Kasai made the route search in both "integer programming" and "all search"methods. His work is unique in that they can mathematically demonstrate that the route searched is the longest among all the potential routes eligible for the one-way ticket. He used in the all search method the same approach of dividing the entire route into several blocks, in more mathymatically strict way, as Tokyo University Travel Club members had adopted in 1961.
JR Hokkaido, JR Shikoku and JR Kyushu increased the basic fare in January 1996, and the Shin-Shimonoseki = Kokura = Hakata section of San'yo Shinkansen and San'yo and Kagoshima Lines became independent lines as far as the fare calculation is concerned. But the Rule provided that both lines are regarded as the same line with respect to the conditions for issuing tickets. Thus a Round-trip Ticket for a round trip between Tokyo and Hakata with one-way on board Shinkansen and returning by Blue Train. This also applies in determining the continuous route eligible for one-way tickets. However, as an ambiguous provision was inserted in the Rule, there was a room for interpreting the both Shinkansen and conventional lines can be included in a one-way ticket under certain conditions.
In 1980 Mr. Kasai traveled with his longest one–way ticket the route of Kokura (Shinkansen) Hakata (Kagoshima line) Yoshiduka (Sasaguri and Kashii lines) Kashii (Kagoshima line) Nishi-Kokura shown in the left chart below, while a friend of Mr. Kasai who accompanied him in traveling this section was oblidged to use Consecutive Ticket as he could not buy a one-way ticket.
The NHK route did not use the both lines in the section, as seen in the right chart below.
Until March 30, 1987 both directions Kyushu to Hokkaido and Hokkaido to Kyushu were eligible for the one-way ticket. After March 30, 1987 when the longest route took the shape of 6, a 6-letter route, only one direction has become possible. Between March 30, 1087 and March 31, 1988 the longest route started at a atation in Kyushu and ended at Otoineppu, Hokkaido. Only the Hokkaido to Kyushu route has become eligible since April 1, 1988. Letters s and l in the table below show the starting and ending stations, respectively.
|1961/04/13||Furue Line's Furue = Kaigata section opened||12166.2||11965.2||201.0||[Hokkaido] Hiroo (Hiroo) Obihiro (Nemuro) Takikawa (Hakodate) Asahikawa (Soya) Shin-Asahikawa (Sekihoku) Kitami (Chihoku) Ikeda (Nemuro) Attoko (Shibetsu) Naka-Shibetsu (Shibetsu) Shibecha (Senmo) Abashiri (Yumo) Naka-Yubetsu (Nayoro) Nayoro (Soya) Otoineppu (Tenhoku) Minami-Wakkanai (Soya) Horonobe (Haboro) Rumoi (Rumoi) Ishikari-Numata (Sassho) Soen (Hakodate) Iwamizawa (Muroran) Date-Monbetsu (Iburi) Kutchan (Hakodate) Hakodate [Honshu and Shikoku] (Seikan Ferry) Aomori (Ou) Kawabe (Gono) Higashi-Noshiro (Ou) Odate (Hanawa) Koma (Tohoku) Morioka (Yamada) Kamaishi (Hanamaki) Hanamaki (Tohoku) Kogota (Ishinomaki) Ishinomaki (Senseki) Sendai (Senzan) Uzen-Chitose (Ou) Akita (Uetsu) Sakamachi (Yonesaka) Imaizumi (Nagai) Akayu (Ou) Fukushima (Tohoku) Iwanuma (Joban) Taira *a (Ban'etsu-to) Koriyama (Ban'etsu-sai) Niitsu (Uetsu) Shibata (Hakushin) Niigata (Echigo) Yoshida (Yahiko) Higashi-Sanjo (Shin'etsu) Naoetsu (Hokuriku) Itoigawa (Oito) Matsumoto (Shinonoi) Shinonoi (Shin'etsu) Toyono (Iiyama) Echigo-Kawaguchi (Joetsu) Shin-Maebashi (Ryomo) Oyama (Tohoku) Asaka-Nagamori (Suigun) Mito (Joban) Abiko (Narita) Matsugishi (Sobu) Naruto (Togane) Oami (Boso-to *b) Awa-Kamogawa (Boso-sai *c) Soga (Boso-to *b) Chiba (Sobu) Akihabara (Tohoku) Kanda (Chuo) Yoyogi (Yamanote) Shinagawa (Tokaido) Tsurumi (Tsurumi) Hama-Kawasaki (Nanbu) Tachikawa (Chuo) Shinjuku (Yamanote) Tabata (Tohoku) Nippori (Tohoku via Oku) Omiya (Kawagoe) Komagawa (Hachiko) Kuragano (Takasaki) Takasaki (Shin'etsu) Komoro (Koumi) Kobuchizawa (Chuo) Hachioji (Yokohama) Higashi-Kanagawa (Tokaido) Kodu (Gotenba) Numadu (Tokaido) Kakegawa (Futamata) Shinjohara (Tokaido) Toyohashi (Iida) Tatsuno (Chuo) Shiojiri (Chuo) Nagoya (Kansai) Kameyama (Kisei) Wakayama *d (Wakayama) Takada (Sakurai) Nara (Kansai) Tennoji (Osaka-kanjo) Kyobashi (Katamachi) Kidu (Kansai) Tsuge (Kusatsu) Kusatsu (Tokaido) Gifu (Takayama) Toyama (Hokuriku) Tsuruga (Obama) Nishi-Maiduru (Miyadu) Toyooka (San'in) Kyoto (Tokaido) Amagasaki (Fukuchiyama) Tanikawa (Kakogawa) Kakogawa (San'yo) Okayama (Uno) Uno (Uko Ferry) Takamatsu (Kotoku) Sako (Tokushima) Awa-Ikeda (Dosan) Tadotsu (Yosan) Horie (Nihori Ferry) Nikata (Kure) Mihara (San'yo) Hiroshima (Geibi) Shiomachi (Fukuen) Fukuyama (San'yo) Kurashiki (Hakubi) Niimi (Kishin) Higashi-Tsuyama (Inbi) Tottori (San'in) Hoki-Daisen (Hakubi) Bicchu-Kojiro (Geibi) Bingo-Ochiai (Kisuki) Shinji (San'in) Iwami-Masuda *e (Yamaguchi) Ogori *f (San'yo) Nishi-Ube*g (Ube) Ino (Onoda) Onoda (San'yo) Asa (Mine) Shomyoichi *h(San'in) Hatabu (San'yo) [Kyushu] Moji (Kagoshima) Kashii (Kashii) Umi (Katsuta) Yoshiduka (Kagoshima) Hakata (Chikuhi) Imari (Matsuura) Sasebo (Sasebo) Haiki (Omura) Isahaya (Nagasaki) Tosu (Kagoshima) Haruda (Chikuho) Nogata (Ita) Kaneda (Itoda) Gotoji *i (Hida-Hikosan) Ita *j (Tagawa) Yukuhashi (Nippo) Jono (Hida-Hikosan) Kawara (Soeda) Soeda (Hida-Hikosan) Yoake (Kyudai) Kurume (Kagoshima) Kumamoto (Hohi) Oita (Nippo) Miyakonojo (Kitto) Yoshimatsu (Hisatsu) Yatsushiro (Kagoshima) Sendai (Miyanojo) Satsuma-Okuchi (Yamano) Kurino (Hisatsu) Hayato (Nippo) Nishi-Miyakonojo (Shibushi) Shibushi (Furue *k) Kaigata *l|
|1962/06/10||Hokuriku Line shortened by rerouting of Tsuruga = Imajo section||12159.1||11958.1||201.0|
|1962/07/18||Tsukuda Station opened on Tokushima Line||12148.2||11947.2||201.0||.....Sako (Tokushima) Tsukuda (Dosan) Tadotsu.....|
|1963/04/28||Boso-to Line shortened by rerouting of Chiba = Hon-Chiba and Toke = Oami section||12147.8||11946.8||201.0|
|1963/05/08||Nichinan Line's Minami-Miyazaki = Kitago section opened||12183.6||11982.6||201.0||.....Minami-Miyazaki (Nichinan) Shibushi (Shibushi) Nishi- Miyakonojo.....Hayato (Nippo) Kagoshima (Kagoshima) Nishi-Kagoshima (Ibusuki *m) Nishi-Ei|
|1963/10/31||Ibusuki-Makurazaki Line's Nishi-Ei = Makurazaki section opened||12203.8||12002.8||201.0||.....Nishi-Ei (Ibusuki-Makurazaki) Makurazaki|
|1963/12/01||Kagoshima Line's Yoshiduka = Hakata = Takeshita section and Chikuhi Line's Hakata = Chikuzen-Monoshima section shortened by rerouting||12203.3||12002.3||201.0|
|1964/10/01||Tokaido Shinkansen opened||12334.7||12133.7||201.0||.....Kogota (Rikuu-to) Shinjo.....Sakamachi (Uetsu) Shibata (Hakushin) Niigata (Echigo) Kashiwazaki (Shin'etsu) Niitsu (Ban'etsu-sai) Koriyama (Tohoku) Fukushima (Ou) Yonezawa (Yonesaka) Imaizumi (Nagai) Akayu (Ou) Uzen-Chitose (Senzan) Sendai (Tohoku) Iwanuma (Joban) Mito (Suigun) Asaka-Nagamori (Tohoku) Oyama (Mito) Tomobe..........Shinagawa (Tokaido) Tokyo (Tokaido Shinkansen) Odawara (Tokaido) Numazu (Gotenba) Kozu .....Higashi-Kanagawa (Tokaido)Tsurumi.....Omiya (Takasaki) Kuragano (Hachiko) Hachioji.....Kofu (Minobu) Fuji.....Tatsuno (Chuo) Kobuchizawa.....Takasaki (Joetsu) Echigo-Kawaguchi (Iiyama) Toyono (Shin'etsu) Naoetsu (hokuriku) Itoigawa (Oito) Matsumoto (Shinonoi) Shiojiri.....|
|1965/03/01||Passenger service started on Kansai Line's Yao = Sugimotocho section started.||12344.6||12143.6||201.0||.....Yao (Kansai [Hanwa-kamotsu]) Sugimotocho (Hanwa) Tennoji.....|
|1966/03/10||Urushio Line's Urushio = Shimo-Yamada section and Kami-Yamada Line's Kami-Yamada = Buzen-Kawasaki section opened.||12383.5||12182.5||201.0||.....Haruda (Chikuho) Iiduka (Kami-Yamada) Buzen-Kawasaki (Hida-Hikosan) Gotoji *i (Gotoji) Shin-Iiduka (Chikuho) Nogata (Ita) Ita *j.....|
|1966/09/30||Nemuro Line extended by rerouting of Ochiai = Shintoku section||12383.7||12182.7||201.0|
|1966/10/20||Tazawako Line's Akabuchi = Tazawako section opened||12592.2||12391.2||201.0||.....Aomori (Tohoku) Koma (Hanawa) Odate (Ou) Kawabe.....Higashi-Noshiro (Ou) Akita.....Amarume (Rikuu-sai) Shinjo (Ou) Omagari (Tazawako) Morioka.....Kogota (Ishinomaki) Ishinomaki (Senseki) Sendai (Senzan) Uzen-Chitose (Ou) Yonezawa (Yonesaka) Sakamachi.....Fukushima (Tohoku) Iwanuma.....|
|1967/10/01||Passenger service of Kansai Line's Yao = Sugimotocho section discontinued||12582.3||12381.3||201.0||.....Yao (Kansai) Tennoji.....|
|1968/05/25||Sasaguri Line's Sasaguri = Keisen section opened||12592.3||12391.3||201.0||.....Yoshiduka (Sasaguri) Keisen.....Kurume (Kagoshima) Hakata (Chikuhi) Imari (Matsuura) Sasebo (Sasebo) Haiki (Omura) Isahaya (Nagasaki) Saga (Saga) Sedaka (Kagoshima) Kumamoto.....|
|1968/09/01||Tohoku Line shortened by rerouting||12610.7||12409.7||201.0|
|1969/10/01||Hakodate Line (Osamunai = Ino section) and Hokuriku Line (whole line) shortened, and Minobu Line (Fuji = Tatebori section) extended by rerouting||12589.0||12388.0||201.0|
|1969/12/01||Kusatsu Line extended by rerouting of Tebara = Kusatsu section||12588.8||12387.8||201.0|
|1971/08/29||Tadami Line's Tadami = Oshirakawa section opened||12652.7||12451.7||201.0||.....Amarume (Uetsu) Sakamachi (Yonesaka) Yonezawa (Ou) Shinjo.....Sendai (Tohoku) Koriyama.....Koide (Tadami) Aidu-Wakamatsu (Banetsu-sai) Niitsu (Uetsu) Shibata (Hakushin) Niigata (Echigo) Kashiwazaki (Shin'etsu) Miyauchi (Joetsu) Echigo-Kawaguchi.....|
|1972/03/15||San'yo Shinkansen's Shin-Osaka = Okayama section opened. Wakayama Line's Tainose = Wakayama section opened, and Tainose = Kiwa section closed||12745.8||12544.8||201.0||.....Wakayama (Wakayama) Tainose.....Shin-Osaka (San'yo Shinkansen) Nishi-Akashi (San'yo) Kobe (Tokaido) Amagasaki.....|
|1972/06/19||Sassho Line's Shin-Totsugawa = Ishikari-Numata section closed||12658.3||12457.3||201.0||.....Obihiro (Nemuro) Furano (Furano) Asahikawa.....Fukagawa (Hakodate) Iwamizawa (Muroran) Numanohata (Chitose) Naebo (Hakodate) Kutchan (Iburi) Date-Monbetsu (Muroran) Oshamanbe.....|
|1972/09/09||Osumi Line's Kaigata-onsen = Kokubu section opened||12757.7||12556.3||201.0||.....Shibushi (Osumi) Kokubu (Nippo) Miyakonojo.....|
|1973/04/01||Musashino Line's Fuchu-honmachi = Shin-Matsudo section opened||12899.7||12604.9||201.0||.....Tabata (Tohoku) Akabane (Tohoku via Oku) Nippori (Joban) Shin-Matsudo (Musashino) Minami-Urawa.....|
|1973/04/09||Negishi Line's Yokodai = Ofuna section opened||12804.1||12603.1||201.0||.....Ofuna (Negishi) Yokohama.....|
|1973/09/01||Ise Line opened and designated as an Article 69 Tokutei-kukan||12795.1||12594.1||201.0||.....Kawarada (Ise) Tsu.....|
|1973/09/09||Chitose Line rerouted||12792.7||12591.7||201.0|
|1974/03/01||Yoto Line's Ekawazaki = Wakai section opened||12955.3||12754.3||201.0||.....Tsukuda (Dosan) Kubokawa (Nakamura) Wakai (Yoto) Kita-Uwajima (Yosan) Horie.....|
|1974/07/20||Kosei Line opened||13032.0||12831.0||201.0||.....Kusatsu (Tokaido) Yamashina (Kosei) Omi-Shiodu (Hokuriku) Maibara (Tokaido) Gifu.....|
|1975/08/31||Sanko Line's Hamabara = Kuchiha section opened||13188.8||12987.8||201.0||.....Himeji (Kishin) Higashi-Tsuyama (Inbi) Tottori (San'in) Hoki-Daisen (Hakubi) Bicchu-Kojiro (Geibi) Bingo-Ochiai (Kisuki) Shinji (San'in) Gotsu (Sanko) Miyoshi (Geibi) Shiomachi (Fukuen) Fukuyama (San'yo) Kurashiki (Hakubi) Niimi (Kishin) Tsuyama (Tsuyama) Okayama.....Hiroshima (San'yo) Ogori (Yamaguchi) Masuda (San'in) Nagato-shi (Mine) Asa (San'yo) Hatabu.....|
|1977/12/11||Kesennuma Line's Yanaidu = Motoyoshi section opened||13260.7||13059.7||201.0||.....Ichinoseki (Ofunato) Kesennuma (Kesennuma) Maeyachi.....|
|1978/10/02||Musashino Line (Shin-Matsudo = Nishi-Funabashi) opened||13267.2||13066.2||201.0||.....Nishi-Funabashi (Musashino) Shin-Matsudo (Joban) Nippori (Tohoku via Oku) Akabane (Akabane) Ikebukuro (Yamanote) Shinjuku (Chuo) Nishi-Kokubunji (Musashino) Minami-Urawa.....Haijima (Ome) Tachikawa (Nanbu) Hama-Kawasaki (Tsurumi) Tsurumi (Tokaido) Shinagawa (Yamanote) Yoyogi (Chuo) Kanda (Tohoku) Akihabara (Sobu) Kinshicho (Sobu) Tokyo (Tokaido Shinkansen) Odawara (Tokaido) Numadu (Gotenba) Kodu (Tokaido) Chigasaki (Sagami) Hashimoto (Yokohama) Hachioji.....|
|1980/09/25||Chuo Line shortened by rerouting of Shinano-sakai = Fujimi section||13267.0||13066.0||201.0|
|1980/10/01||Passenger service started on Shinagawa = Shin-Kawasaki = Tsurumi section of Tokaido Line||13269.9||13068.9||201.0||.....Tsurumi (Tokaido via Shin-Kawasaki) Shinagawa.....|
|1981/10/01||Sekisho Line opened||13361.1||13160.1||201.0||Samani (Hidaka) Tomakomai (Muroran) Numanohata (Chitose) Chitose-kuko (Sekisho) Shintoku.....Iwamizawa (Hakodate) Kutchan.....|
|1981/11/01||Senseki Line shortened by rerouting of Nishi-Shiogama = Rikuzen-Hamada section||13360.9||13159.9||201.0|
|1982/05/17||Chuo Line's Shiojiri = Seba section and Shinonoi Line's Shiojiri = Hirooka section shortened by rerouting||13360.3||13159.3||201.0|
|1982/06/23||Tohoku Shinkansen (Omiya = Morioka) opened||13423.7||13222.7||201.0||.....Sendai (Tohoku Shinkansen) Fukushima (Tohoku) Iwanuma (Joban) Taira *a.....*the route upto Sendai..... Maeyachi (Ishinomaki) Kogota (Rikuu-to) Furukawa (Tohoku Shinkansen) Sendai|
|1982/07/01||Nihori Ferry closed||12724.6||12611.6||113.0||.....Nishi-Maiduru (Maiduru) Ayabe.....Tanikawa (Fukuchiyama) Fukuchiyama (San'in) Tottori (Inbi) Higashi-Tsuyama (Kishin) Himeji (San'yo) Okayama (Tsuyama) Tsuyama (Kishin) Niimi (Hakubi) Kurashiki (San'yo) Fukuyama (Fukuen) Shiomachi (Geibi) Bicchu-Kojiro (Hakubi) Hoki-Daisen (San'in) Gotsu (Sanko) Miyoshi (Geibi) Hiroshima.....|
|1982/09/29||Chuo Line's Agematsu = Kiso-Fukushima section shortened by rerouting||13360.1||13159.3||201.0|
|1982/11/15||Joetsu Shinkansen opened. Iida Line shortened by rerouting of Ugusu = Hiraoka section.||12782.3||12669.3||113.0||.....Niitsu (Shin'etsu) Nagaoka (Joetsu Shinkansen) Niigata (Echigo) Kashiwazaki (Shin'etsu) Miyauchi.....|
|1983/03/22||Chikuhi Line's Yamamoto = Karatsu and Karatsu = Nijinomatsubara sections opened, and Hakata = Meinohama and Nijinomatsubara = Yamamoto sections closed, and Imajuku = Meinohama section shortened by rerouting||12591.4||12478.4||113.0||.....Kokura (Nippo) Jono (Hida-Hikosan) Kawara.....Kurume (Kagoshima) Minamata (Yamano) Satsuma-Okuchi (Miyanojo) Sendai (Kagoshima) Kagoshima (Nippo) Hayato (Hisatsu) Yoshimatsu (Kitto) Miyakonojo (Nippo) Kokubu (Osumi) Shibushi (Nichinan) Minami-Miyazaki (Nippo) Yukuhashi (Tagawa) Tagawa-Ita (Ita) Nogata (Chikuho) Orio (Kagoshima) Kashii (Kashii) Umi (Katsuta) Yoshiduka (Sasaguri) Keisen (Chikuho) Haruda (Kagoshima) Tosu (Nagasaki) Kubota (Karatsu) Yamamoto (Cikuhi) Imari (Matsuura) Arita (Sasebo) Hizen-Yamaguchi (Nagasaki) Isahaya (Omura) Haiki (Sasebo) Sasebo (Matsuura) Imari|
|1983/07/05||Chuo Line's Okaya = Midoriko = Shiojiri section opened||12592.7||12479.7||113.0||.....Taira *a (Ban'etsu-to) Koriyama (Ban'etsu-sai) Niitsu (Shin'etsu) Nagaoka (Joetsu Shinkansen) Niigata (Echigo) Kashiwazaki (Shin'etsu) Miyauchi (Joetsu) Echigo-Kawaguchi (Iiyama) Toyono (Shin'etsu) Naoetsu (Hokuriku) Itoigawa (Oito) Matsumoto (Shinonoi) Shinonoi (Shin'etsu) Takasaki (Joetsu Shinkansen) Echigo-Yuzawa (Joetsu) Shin-Maebashi (Ryomo) Oyama (Tohoku) Asaka-Nagamori (Suigun) Mito (Joban) Tomobe.....Tatsuno (Chuo) Okaya (Chuo) Shiojiri (Chuo) Tajimi.....|
|1983/07/26||Hakubi Line shortened by rerouting of Ikura = Ishiga section||12591.5||12478.5||113.0|
|1985/04/01||Katsuta, Soeda and Urushio Lines closed||12567.2||12454.2||113.0||.....Tagawa-Ita (Tagawa) Yukuhashi (Nippo) Minami-Miyazaki (Nichinan) Shibushi (Osumi) Kokubu (Nippo) Miyakonojo (Kitto) Yoshimatsu (Hisatsu) Hayato (Nippo) Kagoshima (Kagoshima) Sendai (Miyanojo) Satsuma-Okuchi (Yamano) Minamata (Kagoshima) Kurume (Kyudai) Yoake (Hida-Hikosan) Buzen-Kawasaki (Kami-Yamada) Iiduka (Chikuho) Shin-Iiduka (Gotoji) Tagawa-Gotoji (Itoda) Kaneda.....Kashii (Kagoshima) Yoshiduka.....|
|1985/09/30||Tohoku Line's Akabane = Musashi-Urawa = Omiya section opened||12593.5||12480.5||113.0||.....Nishi-Funabashi (Sobu) Akihabara (Tohoku) Nippori (Joban) Shin-Matsudo (Musashino) Minami-Urawa (Tohoku) Tabata (Yamanote) Shinjuku (Chuo) Nishi-Kokubunji (Musashino) Musashi-Urawa (Tohoku) Omiya.....Kanda (Tohoku) Tokyo.....|
|1986/08/01||Fukuchiyama Line shortened by rerouting of Namaze = Dojo section||12591.7||12478.7||113.0|
|1986/11/01||Iburi Line closed||12535.2||12422.2||113.0||.....Kutchan (Hakodate) Oshamanbe.....|
|1987/01/10||Miyanojo Line closed||12499.4||12386.4||113.0||.....Sendai (Kagoshima) Minamata.....|
|1987/03/14||Osumi Line closed||12441.2||12328.2||113.0||.....Shibushi (Shibushi) Nishi-Miyakonojo (Nippo) Kagoshima (Kagoshima) Minamata (Yamano) Kurino (Hisatsu) Yatsushiro.....|
|1987/03/15||Futamata Line transferred||12426.4||12313.4||113.0||.....Kakegawa (Tokaido) Shinjohara.....|
|1987/03/20||Yumo Line closed||12247.5||12134.5||113.0||.....Shintoku (Nemuro) Attoko (Shibetsu) Naka-Shibetsu (Shibetsu) Shibecha (Senmo) Abashiri (Sekihoku) Shin-Asahikawa (Soya) Nayoro.....Fukagawa (Hakodate) Takikawa (Furano) Furano (Nemuro) Takikawa.....|
|1987/03/27||Shibushi Line closed. Ise Line transferred||12178.8||12065.8||113.0||.....Kawarada (Kansai) Kameyama (Ise) Tsu.....Minami-Miyazaki (Nippo) Nishi-Miyakonojo.....|
|1987/03/30||Haboro Line closed||11925.5||11812.5||113.0||l Otoineppu (Tenhoku) Minami-Wakkanai (Soya) Nayoro (Shinmei) Fukagawa (Hakodate) Takigawa (Nemuro) Furano (Furano) Asahigawa (Soya) Shin-Asahigawa (Sekihoku) Abashiri (Senmo) Shibecha (Shibetsu) Naka-Shibetsu (Shibetsu) Attoko (Nemuro) Shintoku (Sekisho) Oiwake (Muroran) Numanohata (Chitose) Shiroishi..... Sasebo (Matsuura) Higashi-Yamashiro s|
|1988/01/31||Yamano Line closed||11879.3||11766.3||113.0||.....Miyakonojo (Kitto) Yoshimatsu (Hisatsu) Hayato (Nippo) Kagoshima (Kagoshima) Yatsushiro.....|
|1988/03/13||Kaikyo Line opened. Shin-Fuji Station opened on Tokaido Shinkansen.||11956.6||11956.6||.....Goryokaku (Esashi) Kikonai (Kaikyo) Nakaokuni (Tsugaru) Aomori.....Kinshicho (Sobu) Tokyo (Tokaido) Shinagawa (Yamanote) Yoyogi (Chuo) Kanda (Tohoku) Akihabara.....Tsurumi (Tokaido) Yokohama (Negishi) Ofuna (Tokaido) Kodu (Gotenba) Numadu (Tokaido) Fuji (Minobu) Kofu (Chuo) Hachioji (Yokohama) Shin-Yokohama (Tokaido Shinkansen) Odawara (Tokaido) Mishima (Tokaido Shinkansen) Shizuoka.....|
|1988/04/01||Matsuura Line Transferred||11813.2||11813.2||.....Haiki (Sasebo) Omachi s (or Haiki (Omura) Isahaya (nagasaki) Hizen-Shiroishi s)|
|1988/04/30||Shinonoi Line shortened by rerouting of Akashina = Saijo section||11812.5||11812.5|
|1988/08/31||Kami-Yamada Line closed||11785.5||11785.5||.....Buzen-Kawasaki (Hida-Hikosan) Tagawa-Gotoji (Gotoji) Shin-Iiduka (Chikuho) Nogata.....|
|1988/12/01||Keiyo Line's Shin-Kiba = Minami-Funabashi, Chiba-Minato = Soga and Ichikawa-Shiohama = Nishi-Funabashi sections opened||11793.8||11793.8||.....Soga (Keiyo) Ichikawa-Shiohama (Keiyo) Nishi-Funabashi.....|
|1989/03/05||San'in Line shortened by rerouting of Saga = Umahori section||11792.2||11792.2|
|1989/03/11||Katamachi Line shortened by rerouting of Osumi = Nagao section||11792.1||11792.1|
|1989/04/20||Fukuen Line shortened by rerouting of Kawasa = Bingo-Mikawa section||11790.7||11790.7|
|1989/04/30||Shibetsu Line closed||11653.7||11653.7||.....Higashi-Kushiro (Senmo) Shibecha.....|
|1989/05/01||Nayoro and Tenhoku Lines closed||11580.2||11580.2||s Samani (Hidaka) Tomakomai (Muroran) Numanohata (Chitose) Chitose-kuko (Sekisho) Shintoku (Nemuro) Higashi-Kushiro (Senmo) Abashiri (Sekihoku) Shin-Asahigawa (Soya)Nayoro (Shinmei) Fukagawa (Hakodate) Asahigawa (Furano) Furano (Nemuro) Takigawa (Hakodate).....(Sasebo) Hizen-Yamaguchi l|
|1989/10/01||Tagawa, Ita and Kaneda Lines transferred||11545.4||11545.4||.....Jono (Nippo) Yukuhashi.....|
|1990/03/10||Keiyo Line's Tokyo = Shin-Kiba section opened||11562.7||11562.7||.....Abiko (Joban) Shin-Matsudo (Musashino) Minami-Urawa (Tohoku) Akabane (Tohoku) Ikebukuro (Yamanote) Tabata (Tohoku) Akihabara (Sobu) Sakura (Narita) Narita.....Minami-Funabashi (Keiyo) Tokyo (Tohoku) Kanda (Chuo) Yoyogi (Yamanote) Shinjuku .....Shitte (Nanbu) Kawasaki (Tokaido) Shinagawa (Tokaido via Shin-Kawasaki) Tsurumi.....|
|1991/10/22||Nemuro Line shortened by rerouting of Shimanoshita = Furano section||11567.5||11567.5|
|1995/09/04||Shinmei Line closed||11454.0||11454.0||s Wakkanai (Soya) Shin-Asahikawa (Sekihoku) Abashiri (Senmo) Higashi-Kushiro (Nemuro) Shintoku (Sekisho) Oiwake (Muroran) Iwamizawa.....|
|1997/03/22||Ban'etsu-sai Line shortened by rerouting of Bandai-Atami = Joko section||11453.4||11453.4||.....Iwaki (Joban) Mito (Suigun) Asaka-Nagamori (Tohoku) Oyama (Mito) Tomobe.....Okaya (Chuo) Kobuchizawa (Koumi) Komoro (Shin'etsu) Takasaki (Joetsu) Koide (Tadami) Aidu-Wakamatsu (Ban'etsu-sai) Niitsu (Shin'etsu) Nagaoka (Joetsu Shinkansen) Niigata (Echigo) Kashiwazaki (Shin'etsu) Miyauchi (Joetsu) Echigo-Kawaguchi (Iiyama) Toyono (Shin'etsu) Naoetsu (Hokuriku) Itoigawa (Oito) Matsumoto (Shinonoi) Shiojiri.....|
|1997/10/01||Hokuriku Shinkansen opened. Shin'etsu Line's Yokokawa = Karuizawa section closed and Karuizawa = Shinonoi section transferred||11473.5||11473.5||.....Iwaki (Ban'etsu-to) Koriyama (Ban'etsu-sai) Niitsu (Shin'etsu) Nagaoka (Joetsu Shinkansen) Niigata (Echigo) Kashiwazaki (Shin'etsu) Miyauchi (Joetsu) Echigo-Kawaguchi (Iiyama) Toyono (Shin'etsu) Naoetsu (Hokuriku) Itoigawa (Oito) Matsumoto (Shinonoi) Nagano (Hokuriku Shinkansen) Takasaki (Joetsu Shinkansen) Echigo-Yuzawa (Joetsu) Shin-Maebashi (Ryomo) Oyama (Tohoku) Asaka-Nagamori (Suigun) Mito (Joban) Tomobe.....Okaya (Chuo) Shiojiri.....|
|2001/04/01||Iida Line shortened by rerouting of Kawaji = Tokimata section||11473.4||11473.4|
|2002/10/21||Hokuriku Line shortened by rerouting of Morimoto = Higashi-Kanazawa section||11473.3||11473.3|
|2002/12/01||Tohoku Shinkansen's Morioka = Hachinohe section opened and Tohoku Line's Morioka = Hachinohe section transferred||11180.7||11180.7||.....Hachinohe (Tohoku Shinkansen) Morioka (Yamada) Kamaishi (Kamaishi) Hanamaki (Tohoku) Kitakami (Kitakami) Yokote (Ou) Akita (Uetsu) Sakamachi (Yonesaka) Yonezawa (Ou) Shinjo (Rikuu-to) Kogota (Tohoku) Ichinoseki (Ofunato) Kesennuma (Kesennuma) Maeyachi (Ishinomaki) Ishinomaki (Senseki) Sendai.....|
|2004/03/13||Kyushu Shinkansen opened and Kagoshima Line's Yatsushiro = Sendai section transferred. Osaka-kanjo Line deleted from Article 70 Tokutei-kukan.||11161.2||11161.2||.....Sendai (Kyshu Shinkansen) Shin-Yatsushiro.....|
|2007/03/18||Wakayama line shortened by rerouting of Yoshino-guchi = Gojo section.||11160.8||11160.8|
|2010/03/13||Musashi-Kosugi station opened on Tokaido branch line.||11157.0||11157.0||.....Tachikawa (Nanbu) Musashi-Kosugi (Tokaido) Shinagawa (Tokaido) Kawasaki (Nanbu) Shitte (Nanbu) Hama-Kawasaki (Tsurumi) Tsurumi.....|
|2010/12/04||Tohoku Shinkansen extended to Shin-Aomori and JR East Tohoku line's Hachinohe = Aomori section transferred to Aoimori Tetsudo.||11146.7||11146.7||.....Aomori (Ohu) Shin-Aomori (Toohoku Shinkansen) Hachinohe.....|
|2011/03/12||Kyushu Shinkansen Hakata = Shin-Yatsushiro section opened.||11183.2||11183.2||.....Haruda (Kagoshima) Hakata (Kyushu Shinkanse) Shin-Tosu.....|
|2012/12/22||Kesen'numa BRT line commenced as a "temporary" step of restoration||11183.2||11127.9||55.3||・・・Kesen'numa (Kesen'numa BRT) Yanaizu (Kesen'numa) Maeyachi.....|
|2015/03/14||Hokuriku Shinkansen extended to Kanazawa and Shin'etsu and Hokuriku lines sections pararell to Shinkansen transferred to third-sector railway companies. Operating kilometer of Senseki line shortened.||11136.2||11080.9||55.3||.....Echigo-Kawaguchi (Iiyama) Iiyama (Hokuriku Shinkansen) Itoigawa.....Toyama (Hokuriku Shinkansen) Kanazawa|
|2015/05/30||"Senseki-Tohoku line" service commenced with the new 0.3 km connecting line between the existing Tohoku line and Senseki line.||11222.3||11167.0||55.3||.....Shin-Aomori (Ohu) Kawabe (Gono) Higashi-Noshiro (Ohu) Akita.....Shinjo (Ohu) Omagari (Tazawako) Morioka.....Kitakami (Tohoku) Ichinoseki.....Ishinomaki (Senseki) Takagimachi (Tohoku) Matsushima (Tohoku) Kogota (Rikuu-to) Furukawa (Tohoku Shinkansen) Sendai.....|
|2016/03/26||Hokkaido Shinkansen opened and JR Hokkaido Esashi line transferred to Donan-isaribi Tetsudo||11140.1||11084.8||55.3||.....Shin-Hakodate-Hokuto (Hokkaido Shinkansen) Shin-Aomori.....|
|2017/04/01||Joban line extended by rerouting of Komagamine = Hama-yoshida section||11140.7||11085.4||55.3|
|a||Renamed Iwaki on 94/12/03|
|b||Renamed Sotobo Line on 72/07/15|
|c||Renamed Uchibo Line on 72/07/15|
|d||Renamed Kiwa on 68/02/01 (The present Wakayama station was then called Higashi-Wakayama.）|
|e||Renamed Masuda on 66/10/01|
|f||Renamed Shin-Yamaguchi on 03/10/01|
|g||Renamed Ube on 64/10/01 (The present Ube-Shinkawa station was then called Ube.）|
|h||Renamed Nagato-shi on 62/11/01|
|i||Renamed Tagawa-Gotoji on 82/11/03|
|j||Renamed Tagawa-Ita on 82/11/03|
|k||Renamed Osum Line on 72/09/09|
|l||Renamed Kaigata-onsen on 72/09/09（Then closed on 87/03/14）|
|m||Renamed Ibusuki-Makurazaki Line on 63/10/31|
The longest route in 1961 is 22.7km longer than the route traveled by Tokyo University members.
The route differs in the Tokyo area as shown in the map below.
|Route A||Route B||Route C|
|(s) means Shinkansen.|
|* includes Substitute bus section.|
|||Among the four members was Mr. Etsuya Washio (鷲尾悦也) who later became President of Rengo (連合), or Japanese Trade Union Confederation. Mr. Washio passed away on February 26, 2012.|
|||While the NHK route extends from Okayama to Shikoku, the trip in Shikoku is an add-on section not covered by the longest one-way ticket.|
|||This is too complicated. For those who are able to understand Japanese, please refer to this page.|
The author recognizes that such a longest one-way trip is possible only in Japan due to the very special rule to issue a one-way ticket as shown in JR's Rule on Passenger Tickets. Any information would be appreciated regarding the rule of the route eligible for a one-way ticket in any country of the world.
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