A guidebook to 40 trail running routes in the Chamonix valley and Mont Blanc massif. Visiting France, Italy and Switzerland the routes are graded allowing you to select routes that suit your ability.
Routes range from 4-168km (3-104 miles) including the 168km Ultra-Trail of Mont Blanc (UTMB)
Routes graded 1-5 and categorised as trail running, fell running or skyrunning
Bases include Chamonix, Les Houches, Servoz, Champex, Courmayeur, Orsi
