Trail de la Biche is a 26 km trail race held in Giron, a village in the Ain department of eastern France. Located at the foot of the Jura massif, the course covers 1000 meters of elevation gain over a mid-distance mountain route, classifying it as Trail XS rather than an ultra-distance event.
The event also features the shorter Trail du Faon, making the weekend accessible to those not aiming for the full 26 km. The Kikourou listing indicates a following of endurance sport regulars who share race reports, photos, GPS tracks, training logs, and personal results. Multiple editions are listed, suggesting a local trail event with a history allowing comparison of past routes, conditions, and stories.