Grand Raid de La Réunion takes place on Thu, Oct 15, 2026 in Saint-Pierre, France. The main route is 180 km.
- Date
- Thu, Oct 15, 2026
- Start
- Saint-Pierre 🇫🇷
- Distance
- 180 km
- Climbing
- 10,200 m
- Level
- Open to all
La Diagonale des Fous is a legendary ultra-trail traversing the rugged volcanic island of Réunion with extreme elevation change.
Official event pageWhat this race demands
This 180-kilometer ultra-trail demands exceptional sustained endurance and the ability to manage extreme vertical gain over punishing volcanic terrain.
Massive Climbing Volume
Accumulating 10,200 meters of elevation change requires relentless uphill climbing and eccentric quad strength to absorb the corresponding descents.
Ultra-Endurance Durability
Covering 180 kilometers demands a highly efficient aerobic engine and careful management of structural breakdown over a multi-day effort.
Consume 60 to 90 grams of carbohydrates per hour to sustain energy output across a duration likely exceeding twenty-four hours.
Estimated finish times
Estimates by level, not promises. Your own number depends on your fitness on the day.
Your road to race day
Race day at Grand Raid de La Réunion is 8 weeks away. This is how a coach divides that time. The first phase starts now.
01Build2 weeks · Aug 21, 2026 – Sep 3, 2026
Progressive overload: training load climbs in waves, with harder weeks stacked on the base and planned recovery weeks that let the gains land.
02Peak3 weeks · Sep 4, 2026 – Sep 24, 2026
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
03Taper2 weeks · Sep 25, 2026 – Oct 8, 2026
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
04Race week1 week · Oct 9, 2026 – Oct 15, 2026
Openers, rest and logistics. The work is done; the job now is arriving fresh.
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