Click for individual JR Hokkaidô lines 1435 mm gauge Hokkaidô Shinkansen 1067 mm gauge Kaikyô-sen (Kanita – Kikonai, incl. Seikan Tunnel) Kikonai - Hakodate (today: Dônan Isaribi Tetsudô) Hakodate - Komagatake - Oshamambe (officially an element of the Hakodate Honsen) Oshamambe – Higashi Muroran - Tomakomai, Higashi Muroran - Muroran (officially an element of the Muroran Honsen) Chitose-sen (Sapporo - Tomakomai, and Shin Chitose airport line) Oshamambe - Otaru (officially an element of the Hakodate Honsen) Esashi-sen (Kikonai - Esashi) Part I Esashi-sen (Kikonai - Esashi) Part II Esashi-sen (Kikonai - Esashi) Part III Ônuma - Shikabe - Mori Sapporo - Otaru (officially an element of the Hakodate Honsen) Sapporo - Ishikari Tôbetsu (officially an element of the Sasshô-sen) Sasshô-sen (Ishikari Tôbetsu - Shin Totsukawa) Sapporo - Ebetsu - Asahikawa (officially an element of the Hakodate Honsen) Tomakomai - Iwamizawa (officially an element of the Muroran Honsen) Hidaka Honsen (Part I) Hidaka Honsen (Part II) Hidaka Honsen (Part III) Hidaka Honsen (Part IV) Sekishô-sen + Kami Ochiai signal post to Obihiro (officially an element of the Nemuro Honsen) Obihiro - Kushiro (officially an element of the Nemuro Honsen) Hanasaki-sen Shin Yûbari – Yûbari Takikawa - Furano - Kami Ochiai signal post (officially an element of the Nemuro Honsen) Furano-sen Rumoi Honsen Sôya Honsen Sekihoku Honsen Semmô Honsen Shibetsu-sen