What it’s like to run around Mont Blanc non-stop in Europe’s toughest – and most beautiful – ultra-marathon
It may push you to your limits, but spending the weekend circumnavigating the Alps in the Ultra Trail Mont Blanc is a truly life-changing experience, finds participant Howard Calvert

It may push you to your limits, but spending the weekend circumnavigating the Alps in the Ultra Trail Mont Blanc is a truly life-changing experience, finds participant Howard Calvert