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MULTIDAYRUNNING
Fixed-Distance

Diagonale des Fous

The headline Grand Raid de la Réunion race crosses about 180 km of volcanic island terrain from Saint-Pierre to Saint-Denis.

Official WebsiteBack to Events

Event dates, entry rules, qualification standards, and course details can change. Always verify current information on the official event website before registering or booking travel.

Event Overview

Listed edition overview
DateOct 15-18, 2026
LocationSaint-Pierre to Saint-Denis, Réunion
FormatFixed-Distance
TerrainMountain
RegionAfrica
DistanceApproximately 180 km
Course modelPoint-to-point
HighlightsRéunion Island Crossing, Grand Raid

Course & Terrain

Mountain point-to-point crossing of Réunion from the island's south coast to Saint-Denis.

Key course features to know before comparing this race:

  • Volcanic highlands
  • Forests, cirques, and rocky ridges

Entry & Logistics

Listed qualification and support details
Registration and feesCheck the official event website for current availability, deadlines, prices, taxes, and refund terms.

Why This Race Matters

Diagonale des Fous is a useful reference point for runners comparing long fixed-distance ultras that still unfold over multiple days. Its format, terrain, and support model shape the kind of preparation required: not just fitness, but pacing discipline, nutrition planning, foot care, and the ability to make good decisions under fatigue.

Planning Notes

  • Prepare for sleep decisions, weather swings, and aid-station discipline. The distance is only one part of a multi-day fixed-distance race.
  • Train for terrain-specific fatigue. Technical trails and mountain courses demand downhill durability, hiking efficiency, and reliable night lighting.
  • The directory does not mark this as having simpler logistics. Confirm qualification, terrain, support, registration, medical, and withdrawal requirements before planning around it.

Verification & Sources

Verification scope: the listed edition's date, location, format, and available logistics were checked against the event-specific official sources below during the directory review dated August 18, 2026. Organizers can revise details after review.

  1. Official Diagonale des Fous page — https://www.grandraid-reunion.com/fr/les-courses/la-diagonale-des-fous/
  2. Official 2026 registration information — https://www.grandraid-reunion.com/fr/inscriptions/modalites-des-inscriptions/modalites-des-inscriptions-1966
  3. Multiday Running event directory review scope: August 18, 2026.