Trainic World 108.2 km 2026
Also known as: Trainic-World in Sainokuni · Trainic-World · Sainokuni
Based at New Sunpia Saitama Ogose in Ogose, Saitama, the race covers the Okumusashi hills in two stages that each return to the venue: North via Mt. Kasa, Mt. Dodaira and Ono Pass, and South 1 via Kanhasshu Miharashidai, Ne-no-Gongen and Mt. Tenkaku. There are no course marshals; runners follow the signage.
The course tops out at 903 m (low point 76 m). There are 3 big climbs: 557 m around 0–13 km; 743 m around 25–36 km; 700 m around 57–70 km. Only about 30% is gentle (under 5% grade); most of it is climbing or descending. In 2026, 57% of starters finished — a tough one. The median finish was about 27 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 66 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, 16 May 2026
- Start
- 09:00
- Location
- Saitama, Japan
- Distance
- 108.2 km
- Elevation gain
- 6,650 m
- Time limit
- 31h
- ITRA
- 100K · 5 points
- Official website
- trainic-world.org/sainokuni/outline
Elevation profile
Aid stations and cutoffs
| # | Distance | Aid station | Segment | Cutoff |
|---|---|---|---|---|
| 1 | 14.3 km | Aid 11 くぬぎむら体験交流館 | 14.3 km | Day 1 12:503h 50m |
| 2 | 20.4 km | Aid 22 慈光寺 | 6.1 km | Day 1 14:405h 40m |
| 3 | 32.2 km | Aid 33 堂平キャンプ場 | 11.8 km | Day 1 18:309h 30m |
| 4 | 39.3 km | Aid 44 刈場坂峠 | 7.1 km | Day 1 20:1011h 10m |
| 5 | 53.8 km | Aid 55 ニューサンピア埼玉おごせ（North終点） | 14.5 km | Day 1 23:3014h 30m |
| 6 | 62 km | Aid 66 桂木観音 | 8.2 km | Day 2 01:1016h 10m |
| 7 | 70.5 km | Aid 77 高山不動尊上の旧茶屋 | 8.5 km | Day 2 03:5018h 50m |
| 8 | 81 km | Aid 88 竹寺 | 10.5 km | Day 2 07:0022h |
| 9 | 92 km | Aid 99 kinoca（東吾野） | 11 km | Day 2 10:4025h 40m |
| 10 | 103.2 km | Aid 1010 桂木観音 | 11.2 km | Day 2 14:2029h 20m |
| F | 108.2 km | FinishFINISH ニューサンピア埼玉おごせ | 5 km | Day 2 16:0031h |
The small figure under each cutoff is the time from the start. Day 1 is the day of the start.
2026 results
438 starters, 248 finishers (56.6% finish rate). Finish times of those who finished:
- Fastest
- 15h 1m
- Top 10%
- 22h 10m
- Top 25%
- 24h 37m
- Median
- 27h 13m
- Top 75%
- 29h 5m
- Top 90%
- 29h 52m
- Last finisher
- 30h 43m
"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.
Practice courses
See the course on the Runnable map ↗
Runnable has practice courses on this race's trails, split into sections to run and sections to walk (pages in Japanese).
- Runnable practice course (108.5 km)
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
- Kitamusashi GIANT'S GATE 2026Sat, 18 Apr 2026 · Saitama, Japan · 85.8 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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