A nocturnal journey linking five sacred peaks across Japan's Shinetsu Highlands
Other trail races within 163 miles
The Shinetsu Five Mountains Trail 100 Mile is a point-to-point race linking five sacred peaks along the Niigata-Nagano prefectural border in central Honshu. Beginning with an evening start from Madarao Kogen ski resort, runners traverse the volcanic flanks of Mt. Myoko (2,454m), the rolling Sasagamine plateau, ancient cedar forests descending from Kurohime, the shrine approach below Togakushi's dramatic cliffs, and a final highland ridge to the finish at Iizuna Resort. The course weaves through farming communities, hot spring villages, and alpine terrain that has defined this region since ancient times. Producer Hiroki Ishikawa's distinctive race format integrates runners deeply with local communities: accommodation at partner inns is mandatory, assistant points are family-friendly gatherings, and a portion of entry fees funds ongoing trail maintenance across the highlands.
Experienced ultrarunners
Iiyama, Nagano, JapanSeptember 21, 2026

Must complete a 100K race or longer within the qualification window
Qualifying window: January 01, 2023 – April 07, 2026
Must have completed at least one trail race of 100km or longer within the past 3 years before the registration deadline. Stage races are excluded unless each day is 100km or longer. Informal and unverifiable races are not accepted. The race organizer makes the final determination on qualifying races.

| Location | km | Elevation |
|---|---|---|
Start Start | 0.0 | 916 m |
Finish Finish | 163.0 | 1,102 m |
Sign in to see cutoffs, crew access, drop bags, and services for every aid station.
September mountain weather in the Shinetsu Highlands can change rapidly; afternoon and evening thunderstorms are possible on exposed ridgelines
Temperatures drop significantly at higher elevations and during overnight sections; waterproof jacket, pants, and survival blanket are mandatory gear
No required gear specified
No recommended gear specified



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