UTMB week is one of the biggest, most formidable, awe-inspiring and hotly-anticipated events in the trail running calendar. But whether you’re a runner or not, it’s also one of the most astonishing events to enjoy in the Chamonix valley. From spectating high up in the mountains to participating in the week-long party in the valley, I’m sharing why this event was one of the highlights of our trip to the French Alps and will be for you.