Gruchet trail orientation - Gruchet-le-Valasse 2027

Gruchet Trail Orientation is a night orienteering race held at the Abbaye du Valasse in Gruchet-le-Valasse, France. Teams of 3 to 5 people start after dark and select one of two routes: La Découverte, a 15 km course, or Le GTO, a 25 km course. La Découverte is the more accessible route, suitable for hikers and runners alike, with evening departures and a 5-hour time limit. This shorter course has a 300-participant cap, focusing the event on small-team navigation instead of a large open field.