Parc naturel régional de la Haute Vallée de Chevreuse, Île-de-France, France
17.9 miles (28.9 km) · 1,628 ft elevation gain · Point to Point · trail · Route
The Liaison GR 1 - GR 11 route traverses 17.9 miles through Parc naturel régional de la Haute Vallée de Chevreuse, Île-de-France, France. Elevation gain totals 1,628 feet, with 1,823 feet of descent. The longest climb spans 0.7 miles with 64 feet of gain. Elevation gain averages 94 feet per mile. About 87% of the distance is runnable terrain. Terrain is predominantly trail. The course features hilly terrain. The course difficulty of 4.4 puts it in the top 64.50999999999999% of challenging routes at this distance. The route draws trail runners and hikers interested in technical terrain in Île-de-France.
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