<P> The Yukon Arctic Ultra is a series of non-stop multiday races that take place concurrently beginning in Whitehorse , Yukon at the beginning of February each year . The marathon , 100 / 300 / 430 mile races follow the course of the Yukon Quest . The longer races have three disciplines : mountain bike , xc - skis or foot . The race is billed as the toughest ultramarathon in the world where the temperatures can drop to - 50 degrees plus wind chill . The race was founded in 2003 and has run every year since except 2010 . </P>
<P> The Yukon Arctic Ultra is a series of non-stop multiday races that take place concurrently beginning in Whitehorse , Yukon at the beginning of February each year . The marathon , 100 / 300 / 430 mile races follow the course of the Yukon Quest . The longer races have three disciplines : mountain bike , xc - skis or foot . The race is billed as the toughest ultramarathon in the world where the temperatures can drop to - 50 degrees plus wind chill . The race was founded in 2003 and has run every year since except 2010 . </P>
where is the montane yukon arctic ultra held each year
where is the montane yukon arctic ultra held each year
beginning in Whitehorse , Yukon
beginning in Whitehorse , Yukon