Extreme temperatures in this year's race causing many research subjects to drop out A wave of scratches from the Yukon Arctic Ultra this past week might be frustrating for racers and organizers ...

A difficult new trail, along with extreme cold conditions, made for an especially gruelling Yukon Arctic Ultra this year, with only a fraction of the competitors managing to complete the 600 ...

It's billed as the "world's coldest and toughest ultra" — and the annual Yukon Montane Arctic Ultra is again living up to its reputation this year. Of the 37 walkers, skiers and bikers who ...