Tanzawa Looooooops 165 km 2026
Also known as: Tanzawa LOOPS
The longest category: starting at midnight from a base right by Hadano Station, five laps, alternating direction, of a loop around Oyama in the Tanzawa mountains via Yabitsu Pass. A self-challenge event spanning two nights, with aid at the base and Yabitsu Pass.
The course tops out at 1,244 m (low point 79 m). 5 climbs of 900 m or more keep coming; the biggest is 1,163 m around 67–79 km. About 40% of the distance is gentle (under 5% grade). In 2025, 100% of starters finished. The median finish was about 39 h, through 2 nights.
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 4 finishers of this race — the same model as the TRAIL STATUS app. Nothing is saved or sent.
The app adds predictions from your training log (Strava), race-day pacing and more. Free, no sign-up.
Predict in detail from my Strava trainingOverview
- Date
- Sat, 28 Nov 2026
- Start
- 00:00
- Location
- Kanagawa, Japan
- Distance
- 165 km
- Elevation gain
- 11,000 m
- Time limit
- 40h
- ITRA
- 100M
- Official website
- www.instagram.com/tanzawa_looooooops
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 | — |
| 6 | 99 km | Aid 63周目 終了（本部エイド） | 17.4 km | — |
| 7 | 116.3 km | Aid 74周目（逆回り）ヤビツ峠（中間エイド） | 17.3 km | — |
| 8 | 132 km | Aid 84周目 終了（本部エイド） | 15.7 km | — |
| 9 | 147.6 km | Aid 95周目 ヤビツ峠（中間エイド） | 15.6 km | — |
| F | 165 km | Finishまほろば大橋（FINISH） | 17.4 km | Day 2 16:0040h |
The small figure under each cutoff is the time from the start. Day 1 is the day of the start.
2025 results
5 starters, 5 finishers (100% finish rate). Finish times of those who finished:
- Fastest
- 37h 8m
- Top 10%
- 37h 25m
- Top 25%
- 37h 49m
- Median
- 38h 52m
- Top 75%
- 39h 5m
- Top 90%
- 39h 5m
- Last finisher
- 39h 5m
"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
- Tanzawa Looooooops 33 km 2026Sat, 28 Nov 2026 · Kanagawa, Japan · 33 km
- Tanzawa Looooooops 66 km 2026Sat, 28 Nov 2026 · Kanagawa, Japan · 66 km
- Tanzawa Looooooops 99 km 2026Sat, 28 Nov 2026 · Kanagawa, Japan · 99 km
- Tanzawa Looooooops 132 km 2026Sat, 28 Nov 2026 · Kanagawa, Japan · 132 km
- BULSS 神奈川 (Backyard Ultra Last Samurai Standing) 2026Sat, 21 Feb 2026 · Kanagawa, Japan
- BULSS 神奈川 (Backyard Ultra Last Samurai Standing) 2027Sat, 20 Feb 2027 · Kanagawa, Japan
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.
TRAIL STATUS · FAQ · Privacy policy