Relive the excitement, the thoughts and the fatigue of trailers by following the Pontboset skyrace route, a 23 Km trail with a total height difference of 2,400 metres. Route for expert sky runners who clamber up from the rustic villages of Pontboset up to Lake Cornuto passing through the wide Brenve Valley, crossing green pastures and prickly screes before descending back into the wild Legan Valley and crossing the Trume pastures.