Route aux Cerfs

Route aux Cerfs is an out-and-back mountain bike trail in Île-de-France, France, inside Parc naturel régional de la Haute Vallée de Chevreuse. It is 1.2 miles each way, 2.3 miles there and back. It runs between about 400 ft and 520 ft above sea level, with roughly 140 ft of climbing one way. It is rated mtb:scale 3: technical riding over blocky ground, drops and tight turns, for skilled riders. Most of the way is dirt. The nearest town is Rochefort-en-Yvelines, about 1.9 miles northwest of the start. Peaks within about 3 miles include Butte de Ravanne, Butte Sainte-Anne and Butte des Relais. For camping, Caravaning de la Boucauderie and La ferme des 4 Etoiles are within about 6 miles. There are 3 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.