Ultramarathon

Diagonale des Fous

Diagonale des Fous crosses Réunion from Saint-Pierre to Saint-Denis on a 180-kilometer mountain course, with 10,200 meters of climbing and a 66-hour limit.

Next raceThursday, October 15, 2026
Distance categoryUltramarathon
LocationSaint-Pierre, France
Get alertsRace record updated October 15, 2026

Quick facts

  • The full island crossing covers 180 kilometers with about 10,200 meters of climbing.
  • Runners have up to 66 hours to reach Saint-Denis.
  • Carry a headlamp with spare power, at least 1.5 liters of water, waterproof clothing and a reusable cup.

About the Diagonale des Fous

The Grand Raid's flagship is one of trail running's major global tests, supported by an island-wide crowd and a field of roughly 3,000 runners.

Course

The point-to-point crossing links volcanic highlands, the island's cirques, steep stair-like trail, muddy forest, and remote settlements before Saint-Denis.

Race-day weather

Tropical lowlands, wet cloud forest, cold high ground, and exposed sun can all occur in one race. Rain often makes the technical descents much slower.

Past Diagonale des Fous dates and results

YearDateStatusResults
2026Thursday, October 15, 2026——

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Diagonale des Fous FAQ

When is the Diagonale des Fous?

The 2026 Diagonale des Fous is on Thursday, October 15, 2026.

Does the Diagonale des Fous have live tracking?

Marathon Scout does not list an official live-tracking link for the 2026 Diagonale des Fous yet. We only add a tracker after the race or its timing provider publishes it.

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