Colorado · 18 Miles
Outlast Denver
Outlast Denver is a 18 Miles event held in Littleton, Colorado. It was last held on October 3, 2026 and is usually run in October; the next date hasn't been announced yet. About 200 runners take part across all distances.
- Usually held
- October
- Location
- Littleton, CO
- Field size
- ~200 runners
Race details
- Last held
- October 3, 2026
- Usually held in
- October
- Location
- Littleton, Colorado
- Distances
- 18 Miles
- Field size
- About 200 runners
- Registration
- runsignup.com
- Official website
- texasoutlawrunning.com
Registration, course & weather
- Registration status
- Registration status as last checked September 22, 2026: open
About the Outlast Denver
What Is OUTLAST? OUTLAST is a 6-hour trail endurance challenge where runners complete a 5K every hour, on the hour. Each lap must be finished within the hour to stay in the event. If you finish early, you rest until the next round. Miss a lap, and you’re out. Complete all six rounds, and you OUTLAST. This isn't just about speed — it's about pacing, discipline, and mental grit. Whether you're trying to survive all six or win your division, the challenge is the same: show up each hour, push your …
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Outlast Denver: common questions
- When is the Outlast Denver?
- The next date hasn't been announced in the listing yet. The race is usually held in October. Check the organiser's website for the official date.
- Where is the Outlast Denver held?
- In Littleton, Colorado.
- What distances does the Outlast Denver offer?
- 18 Miles.
- How many people run the Outlast Denver?
- About 200 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the Outlast Denver?
- Registration is handled by the organiser at runsignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Outlast Denver?
- Registration status as last checked September 22, 2026: open. $110 (from runsignup.com, checked September 22, 2026).
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