Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, kilometre by kilometre.
Race-day light
For a 26:05 finish (an estimate) · starting 07:00 15 Oct · headlamp km 82–152. Dark means the sun below civil twilight.
Climbs
21 climbs · 8,464 m totalbiggest firstConditions typical race-day weather for 15 Oct at the start
Typical = the median of 2016–2025 for 15 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
On race day it reached 28°C at the start, with a low of 20°.
| Year | Start °C | Rain | Wind | Heat index |
|---|---|---|---|---|
| 2026 Oct 15 | 28°/20° | dry | 25km/h | 28° |
race-day weather from the Open-Meteo historical archive (ERA5) at the start line.
Reviews what runners who have been there say
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About this course
Grand Raid La Reunion - Diagonale des Fous 180K — 2026 covers 178.7 km (111.1 mi) with 9,064 m (29,737 ft) of elevation gain. That is about 51 m per km of climbing, and 9,027 m of descent. The course tops out at 2,476 m and bottoms out at 2 m. The profile has 21 sustained climbs; the biggest is the climb from km 0.8, +1,129 m over 18.2 km at 6.2% on average (steepest stretch 22%). Race day is 15 October 2026, starting at 07:00; the sun rises at 05:48 and sets at 18:22. Typical race-day weather at the start: a high of 26°C and a low of 21°C, with a 11% 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
- Oct 27, 2026Added to the catalog
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