18.10.2026Magny-les-Hameaux (France)
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Start line in
1 course · 25 km
1 course
25km
522 m D+
513 m D-
avg 2%
La Grande Boucle18.10.
Course analysis
La Grande Boucle25 km522 m D+
30effort kmⓘ25 km on the map · feels like 30 km
- D+
- 522 m
- D−
- 513 m
- Max alt.
- 171 m
- Steepest
- 10%
Segments
Elevation profile: La Grande Boucle
88 m — 171 m
The race
A trail race near Paris in the Haute Vallée de Chevreuse Regional Natural Park, crossing 7 hamlets with varied forest trails.
Where to stay
Find a place to stay near Magny-les-Hameaux for the race.
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