Jungle Guruguru MAX 160km 2026
Also known as: JGM 160km
A lap-based endurance race in the satoyama hills of Oku-Musashi. From 2026 it moves to New Sunpia Saitama Ogose with a new course. Runners do four laps of a loop linking Kanhasshu Miharashidai, Takayama Fudo, Kaburi Pass and the Katsuragi lookout, with no course marshals, so self-navigation is expected.
10,152 m of climbing over 173 km (59 m per km). In 2025, 43% of starters finished — a tough one. The median finish was about 32 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 11 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, 24 Oct 2026
- Start
- 07:30
- Location
- Saitama, Japan
- Distance
- 173 km
- Elevation gain
- 10,152 m
- Time limit
- 35h
- ITRA
- 100M
- Official website
- npo-sup.org/blog/event/jgm_vol06
Elevation profile
No elevation data yet.
Aid stations and cutoffs
| # | Distance | Aid station | Segment | Cutoff |
|---|---|---|---|---|
| 1 | 19.8 km | Aid 1八徳1 八徳自治会館 | 19.8 km | — |
| 2 | 43.2 km | Aid 2本部1（会場・1周目終了） | 23.4 km | Day 1 18:3011h |
| 3 | 63 km | Aid 3八徳2 八徳自治会館 | 19.8 km | — |
| 4 | 86.5 km | Aid 4本部2（会場・2周目終了） | 23.5 km | Day 2 03:3020h |
| 5 | 106.3 km | Aid 5八徳3 八徳自治会館 | 19.8 km | — |
| 6 | 129.7 km | Aid 6本部3（会場・3周目終了） | 23.4 km | Day 2 12:3029h |
| 7 | 149.5 km | Aid 7八徳4 八徳自治会館 | 19.8 km | Day 2 14:0030h 30m |
| F | 173 km | Finish本部（FINISH） | 23.5 km | Day 2 18:3035h |
The small figure under each cutoff is the time from the start. Day 1 is the day of the start.
Registration
- Registration
- Fri, 29 May 2026 – Mon, 5 Oct 2026
- Entry
- First come, first served
Add the race in the app to put registration opening and closing and the lottery results into your calendar.
2025 results
23 starters, 10 finishers (43.5% finish rate). Finish times of those who finished:
- Fastest
- 28h 38m
- Top 10%
- 29h 14m
- Top 25%
- 30h 41m
- Median
- 32h 8m
- Top 75%
- 32h 26m
- Top 90%
- 33h 58m
- Last finisher
- 33h 58m
"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
- FunTrails Round Chichibu 100MILE 2026Sat, 14 Nov 2026 · Saitama, Japan · 160 km
- FunTrails Round Chichibu 100K 2026Sat, 14 Nov 2026 · Saitama, Japan · 105 km
- Okumusashi Long Trail 105 km 2026Sat, 30 May 2026 · Saitama, Japan · 105 km
- Okumusashi Long Trail 35 km 2026Sun, 31 May 2026 · Saitama, Japan · 35 km
- Trainic World 162.8 km 2026Sat, 16 May 2026 · Saitama, Japan · 162.8 km
- Trainic World 108.2 km 2026Sat, 16 May 2026 · Saitama, Japan · 108.2 km
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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