Outlast Denver

OUTLAST DENVER

OUTLAST Denver is a six hour trail endurance challenge held in Littleton, Colorado at 11500 N. Roxborough Park Rd on October 3, 2026. The event format requires participants to complete a 5K loop every hour, on the hour. Each lap must be finished within the hour to remain in the event; missing a lap ends an individual’s attempt.

The course is trail based with natural terrain, elevation changes, and variable conditions; some sections may include pavement or gravel. Between laps participants have time to recover, refuel, and prepare for the next hour. Aid is provided at a basecamp or loop start with water, basic hydration, and snacks; the event is cupless, so runners should bring their own bottle or hydration system. Participants may set up a personal tent or aid area.

Recognition and awards are structured by laps completed and finishing position. Completing four laps earns a “Grit Earned” patch, five laps earns a “Survivor” patch, and completing all six earns a premium OUTLAST medal and placement on the national leaderboard. All participants receive a premium OUTLAST tee. The fastest finisher across all OUTLAST 6 hour events is named National Champion and receives a $1,000 prize. The top five male and top five female 6 hour finishers from each city qualify for the Outlast Championship in DFW on December 4, 2027, where additional cash prizes are awarded for top finishers. Visit the organization's website for the most recent information.