The Laissac Biathlon Trail is a short-format trail-running event held in Laissac, Aveyron. It takes place in January at the cattle market site, featuring youth and adult biathlon-trail races alongside separate children's races. The schedule is concise, with five races ranging from 800 metres to 8 kilometres, focusing on quick efforts rather than extended mountain running.
The adult events comprise an 8 km biathlon trail, a 5 km mass-start race, and a 3 km sprint. Children can participate in 800 m and 1.5 km races. Course profiles are nearly flat, with minimal positive elevation gain, typically around 1 metre over distances from approximately 790 metres to 7.9 kilometres. Entry fees are reasonable, ranging from about 10 euros for the sprint to 25 euros for the 8 km race. AACTION 12 is the organizing body.