Denali135

The Denali135 Ultra is an epic endurance race that challenges athletes to traverse 131 miles along the historic Denali Highway, from Paxson to Cantwell, Alaska. This point-to-point journey offers breathtaking views of towering peaks and pristine wilderness, with runners experiencing nearly 20 hours of arctic daylight each day during June’s long summer nights.
The route begins at the confluence of the Richardson and Denali Highways near the Gulkana River watershed before climbing to Tangle Lakes, a chain of lakes rich in archaeological significance. The road then transitions from paved to chip-sealed gravel as it winds through sub-alpine landscapes, culminating in an ascent to Maclaren Summit Pass at 4,086 feet.
Runners will pass by several lodges and river crossings that serve as key rest stops along the way, including Alpine Creek Lodge where racers can refuel before pushing on towards the Susitna River Bridge. The final stretch sees the highway turn back to pavement for a two-mile dash to the finish line in Cantwell.
This ultra demands a support crew due to its remote and rugged nature, with strict qualifications ensuring only seasoned endurance runners take part. Participants must submit proof of completing three ultras over 50 miles within the last three years, including one longer than 100 miles. The race is limited to just 50 athletes each year, making it a rare opportunity for those seeking an unparalleled wilderness adventure.
With its unique setting and challenging terrain, the Denali135 offers a once-in-a-lifetime experience that rewards runners with stunning vistas and the chance to push their limits in one of Alaska’s most awe-inspiring landscapes.