The Trail de la Vallée de l'Urne is a trail running event held at the André Allenic sports complex in Trégueux, Brittany's Côtes-d'Armor department. Organized by Trégueux Langueux Athlétisme, the event takes place in the afternoon and offers multiple race distances: 10 km, 18 km, and 28 km, in addition to children's races.
The 10 km hike and Nordic walk is the most accessible option, open to all participants without official ranking. This route combines paths and roads, with refreshments provided at the finish. The 28 km trail, the longest distance, begins later in the afternoon and includes two aid stations. Participants are advised to bring a headlamp, suggesting the possibility of running in fading light. All finishers will receive a gift, and prizes will be awarded to the top three male and female runners. Additionally, one euro from each hike or Nordic walk registration will be donated to charity.