LAKE BIWA 100 2026
Also known as: LAKEBIWA
A one-way 100-miler from Yunoyama Onsen in Mie through the Suzuka range, the Konan Alps, Mt. Hiei and the Hira mountains around Lake Biwa, finishing on the lakeshore in Otsu. Chains and narrow ridges are frequent, and sparse marking makes navigation part of the test.
The course tops out at 1,208 m (low point 78 m). There are 2 big climbs: 864 m around 0–9 km; 985 m around 150–158 km. About 40% of the distance is gentle (under 5% grade). In 2025, 74% of starters finished. The median finish was about 45 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 69 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
- Fri, 30 Oct 2026
- Start
- 09:00
- Location
- Mie, Japan
- Distance
- 170 km
- Elevation gain
- 10,500 m
- Time limit
- 52h 10m
- ITRA
- 100M · 6 points
- Official website
- lakebiwa100.com/outline
Elevation profile
Aid stations and cutoffs
| # | Distance | Aid station | Segment | Cutoff |
|---|---|---|---|---|
| 1 | 27.2 km | Aid 1A1 安楽峠 | 27.2 km | Day 1 20:1011h 10m |
| 2 | 33.3 km | Aid 2A2 鈴鹿峠 | 6.1 km | Day 1 23:1014h 10m |
| 3 | 46.2 km | Aid 3A3 余野公園 | 12.9 km | Day 2 04:4019h 40m |
| 4 | 74.8 km | Aid 4A4 黄瀬交流館さらら | 28.6 km | Day 2 09:4024h 40m |
| 5 | 97 km | Aid 5A5 田上枝公園 | 22.2 km | Day 2 13:4028h 40m |
| 6 | 113.9 km | Aid 6W2 長等公園 | 16.9 km | Day 2 18:4033h 40m |
| 7 | 125.8 km | Aid 7A6 北白川小学校 | 11.9 km | Day 2 22:1037h 10m |
| 8 | 144.1 km | Aid 8W3（北白川から約18.3km） | 18.3 km | Day 3 04:1043h 10m |
| 9 | 149.6 km | Aid 9A7 還来神社 | 5.5 km | Day 3 06:1045h 10m |
| F | 170 km | FinishFINISH 比良（カーメルビーチクラブ前） | 20.4 km | Day 3 13:1052h 10m |
The small figure under each cutoff is the time from the start. Day 1 is the day of the start.
Registration
- Registration
- Fri, 1 May 2026 – Mon, 18 May 2026
- Entry
- Lottery
- Lottery results
- Sun, 24 May 2026
Add the race in the app to put registration opening and closing and the lottery results into your calendar.
2025 results
331 starters, 244 finishers (73.7% finish rate). Finish times of those who finished:
- Fastest
- 25h 13m
- Top 10%
- 33h 8m
- Top 25%
- 37h 53m
- Median
- 44h 42m
- Top 75%
- 48h 16m
- Top 90%
- 50h 8m
- Last finisher
- 51h 38m
"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 (67.7 km)
- Runnable practice course (88.1 km)
Other races
- YORO MOUNTAIN 41 km 2025Sat, 6 Dec 2025 · Mie, Japan · 41 km
- KUMANO OLD TRAILS 49.7 km 2026Sun, 6 Dec 2026 · Mie, Japan · 49.7 km
- KUMANO OLD TRAILS 25.2 km 2026Sun, 6 Dec 2026 · Mie, Japan · 25.2 km
- Shinetsu Five Mountains 100mile 2026Mon, 21 Sep 2026 · Nagano, Japan · 163 km
- FunTrails Round Chichibu 100MILE 2026Sat, 14 Nov 2026 · Saitama, Japan · 160 km
- KUMAN100 100mile 2026Sat, 13 Jun 2026 · Hiroshima, Japan · 163.8 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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