Grand Raid

Grand Raid Réunion Diagonale des Fous
arrival at 2011 edition
Genre	Ultra-marathon
Date(s)	October
Frequency	annually
Location(s)	Réunion
Inaugurated	1989
Participants	2350 competitors
Website
grandraid-reunion.com

The Grand Raid de la Réunion, also called La diagonale des fous (The Madmen's Diagonal) is a mountain ultramarathon race. The race takes place annually in October on Réunion island, a French overseas department in the Indian Ocean, situated between Madagascar and Mauritius. The 162 km route with 9643 m of elevation gain is reputed to be highly challenging.

Three races are held at the same time: