Embark on an extraordinary journey through the Alaskan wilderness at the Denali135, a challenging 135-mile ultra-marathon set for June 21, 2026. This epic point-to-point race traverses the historic Denali Highway, starting in Paxson, AK, at the crossroads of the Richardson and Denali Highways, and concluding in Cantwell, AK, near the entrance to Denali National Park. Runners will experience approximately 8,800 feet of elevation gain across a course that transitions from 21 miles of pavement to mostly hard-packed, chip-sealed gravel, climbing to the 4,086-foot Maclaren Summit Pass. National Geographic has recognized the Denali Highway as one of North America's top ten most scenic roads, offering superlative panoramic vistas with the majestic 20,310-foot Denali and the Alaska Range as a constant backdrop. Adding to the allure, the race day on the summer solstice provides nearly 20 hours of arctic daylight, creating a truly unique running experience where headlamps are often unnecessary.

What truly sets the Denali135 apart is its rugged, self-supported format; there are no traditional aid stations, making a mandatory support vehicle and crew essential for every runner to provide all necessary food, water, and assistance throughout the race. This structure fosters an incredible bond between runner and crew, adding another layer of challenge and camaraderie to the remote Alaskan adventure. Past participants, including 2024 course record holder Pete Kostelnick, praise the "unbeatable beauty" and unique experience of running the entire race without a headlamp. Typical race day conditions in late June bring highs around 70°F and lows around 48°F, with a 16% chance of precipitation, providing generally favorable, albeit variable, weather for such an endurance feat.

Limited to just 50 runners, the Denali135 ensures an intimate and profound connection with one of the planet's last untouched gems. Those who conquer this grueling course within the 48-hour cut-off are rewarded with a distinctively crafted Alaskan moose antler belt buckle and an official finisher's shirt. From the wild Gulkana River watershed, past the archeologically significant Tangle Lakes, and through a landscape carved by Ice Age glaciers, this race promises an unforgettable test of endurance amidst the breathtaking grandeur of Alaska.