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American Heroes Run
Longmont, Colorado · Friday, September 11, 2026 · 100 Mile, 24 Hour, 6 Hour
Official race page & registration ↗American Heroes Run takes place on Friday, September 11, 2026 in Longmont, Colorado. The race offers 3 distances: 100 Mile, 24 Hour, 6 Hour. For anyone travelling in, Erie is about 9 miles away and Fort Collins is about 29 miles away.
It is one of 155 races on the Colorado calendar that September. Unusually for a race, it falls on a Friday.
- Date
- Friday, September 11, 2026
- Location
- Longmont, Colorado
- Distances
- 100 Mile, 24 Hour, 6 Hour
Listing from the 2026 race calendar, refreshed nightly. Details can change: confirm date and entry on the official race page before travelling. Spot an error? Tell us here.
Making a race weekend of it?
Stay near the start line in Longmont: check in Sep 10, out Sep 12.
Common questions
When is American Heroes Run?
American Heroes Run is scheduled for Friday, September 11, 2026.
Where is American Heroes Run held?
American Heroes Run is held in Longmont, Colorado. It is about 9 miles from Erie and 29 miles from Fort Collins.
What distances does American Heroes Run offer?
The listed distances are 100 Mile, 24 Hour, 6 Hour.
How do I register for American Heroes Run?
Registration is handled on the official race page, linked at the top of this listing. Entry can close early if the race sells out.
More races nearby
- Sep 11Flaming Foliage Relay - Idaho Springs to Buena VistaIdaho Springs, CO
- Sep 11Res Hill RuckPagosa Springs, CO
- Sep 122026 Lake Nighthorse Triathlon - Sprint and OlympicDurango, CO
- Sep 122026 RiNo 5K + Larimer MileDenver, CO
- Sep 124th Highland Homecoming 5k Run & WalkAult, CO
See every race on the Colorado calendar, Colorado Ultras, or use the Race Finder for maps and filters.