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Itsukaichi Line
An E233 series EMU between Higashi-Akiru and Kumagawa
Native name五日市線
TypeHeavy rail
Operator(s)JR East
Line length11.1 km (6.90 mi)
Track gauge1,067 mm (3 ft 6 in)
Electrification1,500 V DC overhead catenary
Operating speed85 km/h (53 mph)
Route map

The Itsukaichi Line (五日市線, Itsukaichi-sen) is a railway line operated by East Japan Railway Company (JR East) in Tokyo, Japan. It links Musashi-Itsukaichi Station in the city of Akiruno with Haijima Station in the city of Akishima. From there, some trains travel through to Tachikawa Station via the Ōme Line, and select weekend/holiday services (branded as Holiday Rapid Akigawa) continue from Tachikawa along the Chūō Line to Tokyo Station. This line can only accommodate trains of 4- or 6-car lengths.


A Shinjuku-bound Holiday Rapid Okutama (E233 series EMU) at Haijima Station

Itsukaichi Line Local

Local trains stop at all stations between Musashi-Itsukaichi and Haijima.

Through services

The Itsukaichi Line, at times, runs through services along the Ōme Line . All through services into the Itsukaichi Line stop at every station on this line.

Former through services

Holiday Rapid Akigawa

See also: Holiday Rapid Okutama

Until 18 March 2023, Holiday Rapid Akigawa services ran on weekends on this line. See the article for more information.


All stations are located in Tokyo, and all services stop at every station.

No. Station Japanese Distance (km) Transfers Location
JC55 Haijima 拝島 - 0.0
JC81 Kumagawa 熊川 1.1 1.1   Fussa
JC82 Higashi-Akiru 東秋留 2.4 3.5   Akiruno
JC83 Akigawa 秋川 2.2 5.7  
JC84 Musashi-Hikida 武蔵引田 1.5 7.2  
JC85 Musashi-Masuko 武蔵増戸 1.3 8.5  
JC86 Musashi-Itsukaichi 武蔵五日市 2.6 11.1  

An extension, via a switchback, formerly operated to Musashi-Iwai Station. It closed to passenger traffic in 1971 and to freight in 1982.[citation needed]


Looking from Musashi-Itsukaichi Station towards Musashi-Masuko Station

The Itsukaichi Line was built by the Itsukaichi Railway in 1925. In 1930, all sections (Tachikawa - Haijima - Musashi-Itsukaichi - Musashi-Iwai) were opened. There were two competing railways between Tachikawa and Haijima: the Ōme Electric Railway (now the Ōme Line) and the Itsukaichi Railway. In 1940, the Itsukaichi Railway was taken over by the Nambu Railway, becoming the Nambu Railway Itsukaichi Line. In 1944, Nambu Railway was nationalized and this line became the JGR Itsukaichi Line. At the same time, the section of the line between Tachikawa and Haijima was deemed non-essential and closed. However, the Tachikawa - Musashi-Uenohara and Musahi-Uenohara - Nishi-Tachikawa sections of the former Nambu Railway are still used by Chūō Main Line and Nambu Line trains traveling to and from the southern area of Tachikawa Station.



  1. ^ "2022年3月ダイヤ改正について" [March 2022 Timetable Revision (Hachiōji Branch)] (PDF). 17 December 2021.
  2. ^ "⾸都圏エリアへ 「駅ナンバリング」を導⼊します" [Introduce “station numbering” to the Tokyo metropolitan area] (PDF). (in Japanese). 6 April 2016. Archived from the original (PDF) on 7 December 2022. Retrieved 7 January 2023.
  3. ^ Kusamachi, Yoshikazu (7 April 2016). "JA・JK・JT・AKB…JR東日本、首都圏で駅ナンバリングなど導入へ" [JA, JK, JT, AKB … JR East to introduce station numbering in the Tokyo metropolitan area]. Response Automotive Media (in Japanese). Archived from the original on 6 August 2022. Retrieved 7 January 2023.
  4. ^ "2022年3月ダイヤ改正について" [Information regarding the March 2022 timetable revision] (PDF). (in Japanese). 17 December 2021. Archived from the original (PDF) on 20 September 2022. Retrieved 7 January 2023.
  5. ^ ""ホリデー快速おくたま"の奥多摩直通運転が終了" ["Holiday Express Okutama" ends Okutama direct service]. Japan Railfan Magazine Online (in Japanese). 13 March 2023. Retrieved 14 March 2023.