The Trail des Mineurs in Grenay, Pas-de-Calais, is a trail race set in a former coal-mining region, distinct from mountain races. Participants can select from short and middle-distance options: a 10 km route with 180 m elevation gain, a 16 km route with 320 m, and a 22 km route with 400 m. The ascents are on the terrils, the slag heaps from the mines. Even the shortest race includes a climb up one, and the longest involves ascending five.
The course winds through slag heaps and past mining landmarks, connecting the race to northern France's industrial history. This event is part of the Trail des Mineurs series and adopts the slogan “Il va falloir aller au charbon!” which translates to “You’ll have to go to the coal!” The organisers state the course is accessible, allowing for walking, and is suitable for more than just experienced trail runners. All finishers receive a medal, a trail cup, photos, beer, and fries. Refreshments are provided along the route and at the finish, and a physiotherapist will be on hand post-race.