Ultramarathons in Japan

All 50 ultramarathons in Japan, from 50K to 200 miles, with the climb, the cutoff and the date for each. Every race links to its own page, where you can see how it fits the runner you are now.

Race	Distance	Where	Date	Climb	Cutoff
Trainic world Ogose-Tokigawa Trail Run 50km	51.4km	Ogose, Japan	Oct 4, 2026	4,593 ft	11 h
Hasetsune Cup - Japan Mountain Endurance Race	64 km	Akiruno, Japan	Oct 11, 2026	13,471 ft	23.98 h
Hasetsune Cup - Japan Mountain Endurance Race	71.5km	Akiruno, Japan	Oct 11, 2026	15,853 ft	24 h
River Shimanto	100km	Shimanto, Japan	Oct 18, 2026	2,297 ft	14 h
Ultramarathon Okumusashi Quintet	70km	Moroyama, Japan	Oct 18, 2026	2,454 ft	12 h
Manno Mountain Madness 2026	80km	Nakato, Japan	Oct 24, 2026	18,373 ft	17 h
Forestrail Shinjo-Hiruzen	68km	Shinjo, Japan	Oct 25, 2026	10,499 ft	14 h
OSJ Kami 100	101km	Hyogo Pref., Japan	Oct 31, 2026	17,418 ft	25 h
OSJ Kami 100	67km	Hyogo Pref., Japan	Oct 31, 2026	11,417 ft	15.5 h
Tokyo 100	100km	Tokyo, Japan	Nov 7, 2026	23,002 ft	30 h
SAIOTO COLORS	53 km	Kitahiroshima, Japan	Nov 8, 2026	11,368 ft	13 h
Sakurayama trail	52km	Fujioka, Japan	Nov 15, 2026	8,930 ft	11 h
Izu Trail Journey	70km	Matsuzaki, Japan	Dec 12, 2026	10,636 ft	14 h
Coast to Coast Boso hanto	67km	Chiba Pref., Japan	Dec 13, 2026	11,404 ft	13 h
Kyoto Great Round	130km	Kyoto, Japan	Dec 28, 2026	19,203 ft	31 h
Kyoto Great Round	100Miles	Kyoto, Japan	Dec 28, 2026	26,247 ft	31 h
Kyoto Great Round	200km	Kyoto, Japan	Dec 28, 2026	32,808 ft	45 h
Kyoto Great Round	81 km	Kyoto, Japan	Dec 28, 2026	12,470 ft	18 h
Kusenbu Quest 50	50km	Nakagawa, Japan	Jan 10, 2027	9,180 ft	11 h
GGR Ishikiriba	100km	Kitahiroshima, Japan	Feb 21, 2027	26,047 ft	15 h
Gokayama-sefuri-crosstrail	62.3km	Nakagawa, Japan	Mar 7, 2027	11,975 ft	8 h
OSJ Shinshiro Trail 64K	64km	Shinshiro, Japan	Mar 21, 2027	14,085 ft	11 h
Ishinomaki Tozan Marathon 55km	55km	Ishinomaki, Japan	Mar 28, 2027	6,798 ft	8 h
Hiroshima Trail	100km	Hiroshima, Japan	Apr 10, 2027	20,945 ft	32 h
Hiroshima Trail	50km	Hiroshima, Japan	Apr 10, 2027	8,406 ft	13.5 h
Ultra-Trail Mt. Fuji (UTMF)	167km	Fuji, Japan	Apr 23, 2027	21,696 ft	45 h
Ultra-Trail Mt. Fuji (UTMF)	70 km	Fuji, Japan	Apr 23, 2027	10,013 ft	21 h
Aso Volcano Trail	114km	Aso City, Japan	May 8, 2027	17,192 ft	29 h
Yatsugatake Nobeyama	100km	Nobeyama, Japan	May 16, 2027	6,562 ft	14 h
Yatsugatake Nobeyama	68km	Nobeyama, Japan	May 16, 2027	4,265 ft	9.83 h
Tamba 100 Adventure Trail	103km	Tamba, Japan	May 29, 2027	13,123 ft	43 h
Tamba 100 Adventure Trail	175 km	Tamba, Japan	May 29, 2027	38,599 ft	57 h
Tamba 100 Adventure Trail	50km	Tamba, Japan	May 29, 2027	12,362 ft	24 h
Okushinano 100	100km	Nagano Pref., Japan	Jun 5, 2027	15,354 ft	21 h
Okushinano 100	52.4km	Nagano Pref., Japan	Jun 5, 2027	7,841 ft	11 h
Echigo Country Trail	63km	Nagaoka, Japan	Jun 13, 2027	7,579 ft	11.5 h
Hida Takayama 100 km Ultramarathon	100km	Takayama, Japan	Jun 13, 2027	3,937 ft	14 h
Deep Japan Ultra 100	130km	Niigata Pref., Japan	Jun 25, 2027	20,046 ft	60 h
Deep Japan Ultra 100	160 km	Niigata Pref., Japan	Jun 25, 2027	24,898 ft	60 h
Deep Japan Ultra 100	80km	Niigata Pref., Japan	Jun 25, 2027	12,966 ft	24 h
Naeba-Sanroku Geopark Tsunan Ultramarathon	64km	Tsunan, Japan	Jul 4, 2027	5,906 ft	12 h
Naeba-Sanroku Geopark Tsunan Ultramarathon	80km	Tsunan, Japan	Jul 4, 2027	9,186 ft	15 h
OSJ Ontake 100km Ultra Trail	99.5km	Otaki, Japan	Jul 18, 2027	11,138 ft	20 h
OSJ Ontake 100km Ultra Trail	100mi	Otaki, Japan	Jul 18, 2027	18,796 ft	24 h
Shin Daisetsuzan Trail Journey	60km	Engaru, Japan	Jul 25, 2027	10,449 ft	14 h
Tango 100 km Ultramarathon	100km	Kyotango, Japan	Sep 19, 2027	4,548 ft	14 h
Tango 100 km Ultramarathon	60km	Kyotango, Japan	Sep 19, 2027	2,235 ft	9.5 h
Shinetsu Five Mountains Trail	112.7km	Myoko, Japan	Sep 21, 2027	14,137 ft	22 h
Shinetsu Five Mountains Trail	162.2km	Myoko, Japan	Sep 21, 2027	21,280 ft	33 h
Tsukubarenzan trailrun in ISHIOKA	71 km	Ishioka, Japan	Sep 26, 2027	8,228 ft	13 h