American Heroes Run

Longmont, United States • 11-12 Sep 2026

American Heroes Run

American Heroes Run is a commemorative running event held in Longmont, CO at 220 Hover Street. The event remembers the events of 9/11/01 and honors those who serve to protect the nation. The course is a flat, looped circuit measuring 1.05-mile per lap.

The event offers a range of race formats and virtual options. Distances and formats include:

  • 100 mile run with a 30 hour cutoff
  • 24 hour run
  • 9 hour and 11 minute event and full marathon
  • Half marathon
  • 9.11 mile run
  • 5K run or walk
  • Six hour open start window
  • Virtual entries available

Support and participant amenities are provided. Every participant receives a race shirt, a special event dogtag, and other items. Finishers receive an event coin and a finisher award; 100 mile finishers receive a belt buckle. A fully stocked aid station is located near the start and finish area and bathrooms are nearby. For overnight races, runners may custom order hot food that will be prepared and available between laps, with examples including quesadillas, potatoes, mashed potatoes, and ramen. Virtual participants receive a shirt, certificate, and awards; overseas shipping is extra. Visit the organization's website for the most recent information.

Race information

100 mi
100-Mile Run
551 min
9 Hour & 11 Minute Run
Marathon
Marathon
Half Marathon
Half-Marathon
9 mi
9.11-Mile Run
5 km
5k Run/walk
6-Hour Run
24-Hour Run
Visit the organization's website for the most recent information.
Trail runs nearby

Trail races near Fort Collins in Lory State Park and Horsetooth Mountain Park offering 25 miles (about 5,500 ft gain) and 50 miles (about 11,000 ft gain) on mostly singletrack with staffed aid stations and a well marked course.

Samson's Revenge is a trail race at the YMCA of the Rockies in Estes Park offering 50k, 25k and 10k options. The course uses a roughly 10 km loop with a prominent Bible Point ascent and two aid stations.

Test your endurance at this Golden Colorado event following the classic backyard format with 4.17 mile laps every hour. Support the Sun Valley Kitchen and Community Center while pushing for your personal best distance.

Haul Ass Ultra at Luvin Arms in Erie, CO features multiple distance and timed events on a mostly flat off road loop with Rocky Mountain views and running past sanctuary animals; a portion of proceeds supports the sanctuary.

Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.