Tanzawa Looooooops 99 km 2026
Also known as: Tanzawa LOOPS
Three laps, alternating direction, of a loop around Oyama in the Tanzawa mountains, based right by Hadano Station and passing Yabitsu Pass. A self-challenge event rather than a ranked race, continuing through the night, with aid at the base and Yabitsu Pass.
The course tops out at 1,244 m (low point 79 m). There are 3 big climbs: 1,154 m around 0–13 km; 1,109 m around 33–46 km; 1,163 m around 67–79 km. About 40% of the distance is gentle (under 5% grade). The median finish was about 26 h, through one night.
Predict your finish from your ITRA index
Enter your ITRA performance index to get your finish time, aid-station splits and cutoff margins from the results of 8 finishers of this race — the same model as the TRAIL STATUS app. Nothing is saved or sent.
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Predict in detail from my Strava trainingOverview
- Date
- Sat, 28 Nov 2026
- Start
- 08:00
- Location
- Kanagawa, Japan
- Distance
- 99 km
- Elevation gain
- 6,600 m
- Time limit
- 32h
- ITRA
- 100K
- Official website
- docs.google.com/document/d/e/2PACX-1vR9rtuW7onLcb2mhfYUdp2aoB1H9kmd4L0TEJO84srNVxLGBEIph5xE1MIMYIpUuQQVR0fhjzIBqMpT/pub
Elevation profile
Aid stations and cutoffs
| # | Distance | Aid station | Segment | Cutoff |
|---|---|---|---|---|
| 1 | 15.7 km | Aid 11周目 ヤビツ峠（中間エイド） | 15.7 km | — |
| 2 | 33 km | Aid 21周目 終了（本部エイド） | 17.3 km | — |
| 3 | 50.3 km | Aid 32周目（逆回り）ヤビツ峠（中間エイド） | 17.3 km | — |
| 4 | 65.9 km | Aid 42周目 終了（本部エイド） | 15.6 km | — |
| 5 | 81.6 km | Aid 53周目 ヤビツ峠（中間エイド） | 15.7 km | — |
| F | 99 km | Finish3周目 終了（本部・FINISH） | 17.4 km | Day 2 16:0032h |
The small figure under each cutoff is the time from the start. Day 1 is the day of the start.
2025 results
6 finishers. Finish times of those who finished:
- Fastest
- 20h 4m
- Top 10%
- 20h 4m
- Top 25%
- 20h 46m
- Median
- 26h 13m
- Top 75%
- 30h 8m
- Top 90%
- 30h 39m
- Last finisher
- 31h
"Top 25%" means one in four finishers had crossed the line by this time.
Years with a different course or different cutoffs are not directly comparable.
Other races
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From your training log, TRAIL STATUS estimates your finish time, aid-station splits and cutoff margins for this race.
Predict my raceCompiled from each race's official information. Details can change, so always check the race's official website for the latest. Spotted a mistake? Please tell us through the contact form.
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