La Jasseronnai'se Trail 2026

The La Jasseronnai'se Trail begins in Jasseron, a village in France's Ain department, leading runners into the Revermont region's trails. This early autumn event offers three primary race distances: an 8 km route with approximately 110 m of elevation gain, a 19 km route with about 720 m of climbing, and a 32 km option featuring around 1,200 m of ascent. The 8 km race is named L'Etang, and the 19 km race is called Le Château. The courses traverse forest paths, hills, and overlooks above Jasseron, emphasizing the local landscape over road speed. One path ascends to the village's higher elevations, and the routes go near the Château de Jasseron, a fortified structure with origins dating to the 10th century. The event attracts a modest field, with a past edition seeing just over 200 participants. The race also benefits Les p'tits doudous bressans, a local charity providing comfort items for children in medical care.