Fontainebleau, France hiking trades alpine drama for something more unusual: pine woods, white sand, and weathered sandstone rising out of the forest floor. The GR 13 threads through the wider massif, while the Sentier des 25 Bosses in the Trois Pignons delivers sharp climbs, exposed rock, and long views. Around Barbizon, Franchard, and Apremont, the terrain feels rugged, dry, and unmistakably local.