Olt'Rail is a trail-running series held in Livinhac-le-Haut, Aveyron, featuring routes set within the Lot valley and around the Laroque Bouillac rock. It caters to runners preferring rugged terrain over road racing, offering challenging, technical paths. A shorter option, Rocàs Pichot, spans 28 km with 1,600 metres of elevation gain.
The courses incorporate wild trails, newly opened sections, and as much single-track as organizers can connect. The "petitou" route traces the Olt river before ascending hillsides with valley vistas, while the Rocàs Pichot route progresses towards Laroque Bouillac, including an initial climb. OTB12 manages the event, providing aid stations and changing facilities on location.