Course
42 km42 km
23 km23 km
11 km11 km
Key dates
- ★Race dayTue 17 Nov 2026
Date confirmed with the organiser · entry window checked by RunCalendar
About
La Sans Raison is now past its 12th running, organized in support of the Laurette Fugain Association. This trail running event offers three different courses through the forests of Vélizy, Chaville, Meudon, and Clamart, catering to runners of all levels.
Your next race, seen from above.
Save La Sans Raison to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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Save La Sans Raison to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.