Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, kilometre by kilometre.
Race-day light
For a 23:50 finish (an estimate) · starting 07:00 30 Oct · headlamp km 68–154. Dark means the sun below civil twilight.
Climbs
30 climbs · 6,461 m totalbiggest firstAid stations as published on the course file
| Aid station | km | Mile |
|---|---|---|
| 湯の山温泉 希望荘 | 0.0 | 0.0 |
| A W1 御在所山 | 8.5 | 5.3 |
| A A1 安楽峠 | 27.9 | 17.4 |
| A A2 鈴鹿峠 | 33.6 | 20.9 |
| A A3 IN 余野公園 | 45.8 | 28.5 |
| A A3 OUT 余野公園 | 45.8 | 28.5 |
| A A4 黄瀬交流館さらら | 72.8 | 45.3 |
| A A5 IN 田上枝公園 | 93.9 | 58.3 |
| A A5 OUT 田上枝公園 | 93.9 | 58.3 |
| A W2 長等公園 | 109.8 | 68.2 |
| A A6 北白川小学校 | 120.8 | 75.0 |
| A W3 伊香立 | 137.9 | 85.7 |
| A A7 IN 還来神社 | 143.1 | 88.9 |
| A A7 OUT 還来神社 | 143.1 | 88.9 |
| F 比良ビーチ | 162.8 | 101.2 |
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Conditions typical race-day weather for 30 Oct at the start
Typical = the median of 2016–2025 for 30 Oct ±3 days at the start line; a wet day has 1 mm of rain or more. Historical weather from Open-Meteo.
Race almanac 1 year of this race
Past editions
Race-day highs at the start ran from 17° to 33°C, and 1 of 2 race days were wet.
| Year | Start °C | High point °C | Rain | Wind | Heat index |
|---|---|---|---|---|---|
| 2026 Oct 30 | 17°/12° | 12°/7° | 38mm | 6km/h | — |
| 2026 Aug 1 | 33°/23° | 26°/17° | dry | 14km/h | 36° |
race-day weather from the Open-Meteo historical archive (ERA5) at the start line and the course high point (1,208 m).
Reviews what runners who have been there say
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About this course
Lake Biwa 100 100 Miler — 2026 covers 162.8 km (101.2 mi) with 11,311 m (37,110 ft) of elevation gain. That is about 69 m per km of climbing, and 11,570 m of descent. The course tops out at 1,208 m and bottoms out at 76 m. The surface is 59% trail, 28% paved and 5% gravel. There are 13 aid stations on course; the longest stretch between aid is 27.0 km. The profile has 30 sustained climbs; the biggest is the climb from km 144.2, +789 m over 4.6 km at 17.2% on average (steepest stretch 42%). Race day is 30 October 2026, starting at 07:00; the sun rises at 06:13 and sets at 17:04. Typical race-day weather at the start: a high of 17°C and a low of 9°C, with a 21% chance of a wet day. The interactive map above shows the full route with its elevation profile and aid stations, built from the course's GPS file.
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Course history
- Sep 10, 2026Added to the catalog
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