Val Tho Trail is a short snow trail race in Val Thorens, Les Belleville, situated in a major French winter sports resort. Runners tackle an 8 km route on snow wearing warm socks, running shoes, and a mandatory headlamp. The course ascends 500 metres, reaching over 2,500 metres in altitude; the distance is modest, but the effort is significant.
The start and finish are at Place Caron in Val Thorens. Poles are permitted, which is practical for a snowy uphill course at this resort altitude. The event embraces its mountain setting as runners navigate the ski area after dark, surrounded by supporters, volunteers, and fellow trail runners. Each entry contributes 1 euro to Baskets aux Pieds, an association supporting hospitalized children in cancer wards by providing nature and sport experiences via virtual reality.