Hello! I'm Outgoing.I help make life more interesting.
Hello! I'm Outgoing.I help make life more interesting.






25 bosses SAS
Bois-le-Roi
Conquer 25 hills in a single day on this demanding 16 km loop through the Fontainebleau forest. Originally mapped by Parisian mountaineers for training, the circuit delivers 800 meters of elevation gain through rocky scrambles, sandy stretches, and pine-scented forests. Each summit rewards you with sweeping views over the Trois Pignons massif.
technical hiking circuit
mountaineer training ground
rocky scrambles & sand
panoramic hilltop views
Tips
⛰️legendary trail, allow a full day with breaks
👟good boots essential, road to parking is rough
🐍watch for wildlife, including snakes in warmer months
25 bosses SAS
Bois-le-RoiOpen






Conquer 25 hills in a single day on this demanding 16 km loop through the Fontainebleau forest. Originally mapped by Parisian mountaineers for training, the circuit delivers 800 meters of elevation gain through rocky scrambles, sandy stretches, and pine-scented forests. Each summit rewards you with sweeping views over the Trois Pignons massif.
technical hiking circuit
mountaineer training ground
rocky scrambles & sand
panoramic hilltop views
Tips
⛰️legendary trail, allow a full day with breaks
👟good boots essential, road to parking is rough
🐍watch for wildlife, including snakes in warmer months