Looking down from Utah’s sheer Wasatch Range, I feel relieved to have made it to the end of one of America’s most challenging roads. Rising to nearly 2,500 metres, State Route 210 is no stranger to avalanches. Snow ploughs can’t keep pace with the blizzards and cannons trigger slides to mitigate risk. Travel can be slow and unpredictable — but manage to get here, and the skiing is arguably the finest in North America.