Chemin du Grand Ratz

Chemin du Grand Ratz is an out-and-back mountain bike trail in Auvergne-Rhône-Alpes, France, inside Parc naturel régional de Chartreuse. It is 1.8 miles each way, 3.6 miles there and back. It runs between about 1,840 ft and 2,570 ft above sea level, with roughly 1,110 ft of climbing one way. It is rated mtb:scale 4 or higher: very steep, technical terrain that only expert riders should attempt. Most of the way is dirt. The nearest town is La Buisse, about 1.1 miles northeast of the start. Peaks within about 3 miles include Roche Brune and Rocher de la Garde. Cascade de la Pisserotte and Cascade du Gigot are within about 3 miles. For camping, Camping municipal La Grande Forêt and Wild Camping No Water are within about 6 miles. There are 52 other mapped trails within about 3 miles, so you can combine or extend the outing. Distances, elevations and the trail shape here come from OpenStreetMap and the Copernicus 90 m elevation model. Trail access for bikes, closures and conditions change, so check locally before you ride.