Welcome to the Roger's Grove Trail Half Marathon and 10K (Formerly known as the Longmont Trail Half Marathon).


If you want a perfect view of the mountains, a flat and fast course, and a stint around the water...  Well then look no further than our 4th Annual Longmont trail race at Roger's Grove Park. Settled into the heart of Longmont, the Roger's Grove Trail Half Marathon and 10K is a perfect course for the beginner trail runner...


This course is a mix of bike path, dirt trails, mountain views, and a little bit a water. Both the half marathon and 10k will take runners along the St. Vrain Greenway with a trip into the Golden Ponds Nature Reserve. 

Runners please note that the half marathon is a

2 loop course of the 10k.

Pre-Race Packet Pickup:


Race Day  Schedule:
6:00am-  Race Day Registration Opens
7:00am-  Expo Opens
7:30am-  Half Marathon Starts
7:45am-  10k Starts
8:00am-   Food Tent Opens
9:45am-   Kids Race Starts
10:15am- 10k Awards
10:30am- Half Marathon Awards
11:30am- Expo Closes

Location: Roger's Grove Park

Address: 220 S. Hover St. 
              Longmont, CO 80501


Date: 

Type of Terrain: Dirt Trail, Bike Path
(For Approx %'s Please See Map Links)

Parking: Parking is located across the street from the park in the Boulder County Fairgrounds parking lot. Parking is FREE for runners.              

​Course Notes:

  • Half Marathon is 2 loops of the 10K course
  • Flat and Fast Courses
  • ​Non-Technical Course, Trail or Road shoes acceptable
  • 6 Aid Stations for Half, 3 Aid Stations for 10K


For more detailed course information, maps, testimonials, and course images please see designated course maps.

Packet Pick Up Location:
Runner's Roost Louisville
459 S. McCaslin Blvd
Louisville, CO 80027

FAQ's: Answers to FAQ'S for this event and other ERS events can be found HERE

Roger's Grove Trail Half Marathon and 10K

Race Details

Join us June 16, 2018, as we hit the trails around the Town of Eagle for the 2nd Annual Eagle Half Marathon and 10K.


Both the Half Marathon and 10K courses will take runners past one of the local neighborhoods and alongside the mountain frontage road on the way up to some scenic single track and dirt service road trails on the 2nd- 3rd Gulch trail (10K runners will turnaround after a small climb at the beginning of the mountain) 

If you love to take pictures why you run/race then get your camera out, because you won't want to miss these mountain views (especially at the Half Marathon turnaround)

All or part of this operation is conducted on Public Lands under special permit from the U.S. Bureau of Land Management




Eagle Half Marathon and 10K

Race Schedule

ERS events facebook page

Course Maps