The 6 100 mile ultramarathons in Japan, with each one's climb, cutoff and date. 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 |
|---|---|---|---|---|---|
| Kyoto Great Round | 100Miles | Kyoto, Japan | Dec 28, 2026 | 26,247 ft | 31 h |
| Ultra-Trail Mt. Fuji (UTMF) | 167km | Fuji, Japan | Apr 23, 2027 | 21,696 ft | 45 h |
| Tamba 100 Adventure Trail | 175 km | Tamba, Japan | May 29, 2027 | 38,599 ft | 57 h |
| Deep Japan Ultra 100 | 160 km | Niigata Pref., Japan | Jun 25, 2027 | 24,898 ft | 60 h |
| OSJ Ontake 100km Ultra Trail | 100mi | Otaki, Japan | Jul 18, 2027 | 18,796 ft | 24 h |
| Shinetsu Five Mountains Trail | 162.2km | Myoko, Japan | Sep 21, 2027 | 21,280 ft | 33 h |