Seibu Chichibu Line

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Seibu Chichibu Line
A Seibu Chichibu Line 4000 series train
Native name西武秩父線
LocaleKanto region
Seibu Chichibu
OpenedOctober 14, 1969
OwnerSeibu Railway
Line length19.0 km (11.8 mi)
Track gauge1,067 mm (3 ft 6 in)
Electrification1,500 V DC, overhead catenary

The Seibu Chichibu Line (西武秩父線, Seibu Chichibu-sen) is a railway line in Saitama Prefecture, Japan, operated by Seibu Railway. It is an extension of the Seibu Ikebukuro Line, and connects Agano Station and Seibu-Chichibu Station.


All trains go via Agano Station to the Seibu Ikebukuro line. Abbreviations here are for the table below, not formally used.[1]

     Local (各停, Kakutei) Stops at all stations.

     Express (急行, Kyūkō) (Ex)

     Rapid Express (快速急行, Kaisoku Kyūkō) (RE)

     S-Train (エストレイン, Esutorein) (ST): Morning and evening reserved-seat services between Seibu-Chichibu and Motomachi-Chūkagai via the Tokyo Metro Fukutoshin Line, Tokyu Toyoko Line and Minatomirai Lines at weekends, and between Tokorozawa and Toyosu via the Tokyo Metro Yurakucho Line on weekdays.

     Limited Express (特急, Tokkyū) (LE): Ikebukuro to Seibu Chichibu, trains named Chichibu (ちちぶ), Musashi (むさし), with supplementary limited express charge.

No. Station Japanese Distance (km)
to Ikebukuro
Ex RE ST LE Transfers Location
SI31 Agano 吾野 57.8 O O | | SeibuIkebukuro.svg Seibu Ikebukuro Line Hannō Saitama
SI32 Nishi-Agano 西吾野 61.4 O O | |  
SI33 Shōmaru 正丸 64.1 O O | |
SI34 Ashigakubo 芦ヶ久保 70.2 O O | * Yokoze, Chichibu
SI35 Yokoze 横瀬 74.2 O O | O
SI36 Seibu-Chichibu 西武秩父 76.8 O O O O Chichibu Railway Main Line (Ohanabatake Station) Chichibu


The entire line was opened on October 14, 1969, after over two years of construction, considerably shortening the travel time between Chichibu and Tokyo. Twenty years later, on April 1, 1989, a connection opened to the Chichibu Railway's Chichibu Main Line, and through service began. On March 28, 1996, freight services between Higashi-Yokoze freight terminal and Shin-Akitsu (on the Seibu Ikebukuro Line) ceased. On March 12, 2003, "wanman" (one man) driver only operation began.


  1. ^ "電車・駅のご案内". Seibu (in Japanese). Retrieved 12 March 2020.