La Sans Raison 2026: The three charity trail races in Vélizy on November 22 are sold out.

La Sans Raison 2026 invites runners to meet on Sunday, November 22 at the Stade Robert Wagner in Vélizy-Villacoublay, at 17 avenue Robert-Wagner, in the Yvelines. For this 14th edition, three trail runs of 11, 19 and 30 km are on offer in support of the Laurette Fugain association.

The cause remains at the heart of the event: the association supports research into blood diseases, provides support to patients and their families, and raises awareness about donating blood, platelets and bone marrow. La Sans Raison is therefore one of the charity races in Île-de-France.

• To be read
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• The ultimate guide to running and road races in Paris and Île-de-France for 2026
• What to do in Yvelines this weekend, October 24 and 25, 2026?

Three forest trails starting from Vélizy

Starts are staggered throughout the morning of November 22, 2026:

• La Balèze: 30 km and 600 m of elevation gain, starting at 8:30 a.m. The route passes through the forested areas of Vélizy, Chaville, Meudon and Clamart.
• La Thérèse: 19 km and 400 m of elevation gain, starting at 9:30 a.m., in the Meudon Forest.
• La Laise: 11 km and 200 m of elevation gain, starting at 10 a.m. This is the shortest distance in this edition.

All three distances are sold out

The official ticketing site is showing “sold out” for all three trail races. The announced entry limits are 400 runners for the 30 km, 600 for the 19 km and 200 for the 11 km, for a total of 1,200 race bibs.

Initial registration fees are €18 for the 11 km, €31 for the 19 km and €42 for the 30 km. Event information is available on the official La Sans Raison website.

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