La Course des Mariannes is an 8 km run or walk in Crozon, a town on the Crozon Peninsula in Brittany. It is held in late November and is designed for both runners and walkers, with the same distance offered as a road race and as a walk. The event supports a charitable cause, making it more than just a timed outing for those chasing a result.
The route is a single 8 km loop through town and along the coast. The road race is the more popular option, but the walk broadens the event's reach, with participants of different levels covering the same distance. Its straightforward format contributes to its appeal: one coastal loop, one distance, and a charity purpose.