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The Greenland Trail Race offers three outstanding distances in southern Douglas County. Run the 8 Miler, the 25K, or tackle the 50K ultramarathon, Colorado’s fastest 50K! With Pikes Peak as your backdrop, you’ll cruise over a soft dirt trail on your way to a new personal best. With chip timing, an innovative technical running shirt in men’s and women’s sizing, food and beer at the finish, this race will make you want to come back for more!

Greenland Trail 50K
$80 through Dec 31
$85 Jan 1 – March 31
$90 after March 31
$95 race day
Greenland Trail 25K
$55 through Dec 31
$60 Jan 1 – March 31
$65 after March 31
$70 race day
Greenland Trail 8M
through Dec 31
$45 Jan 1 – March 31
$50 after March 31
$55 race day


  1. All participants will receive a gender specific race logo technical shirt with their registration
  2. All finishers will get a custom made finisher medal
  3. A DJ at the start/finish will create a party-like atmosphere
  4. Professional chip timing
  5. Professional photography
  6. Gift certificate awards from Runners Roost
  7. Pizza and beer at the finish starting at 10:30 AM
  8. The 50K is the RRCA Western Regional Ultrarunning Championship

The race is staged from Greenland Open Space just south of Larkspur, CO. Greenland Open Space is located at 1200 E Noe Rd, Larkspur, CO 80118. For a detailed map, please click here.

Race Day Registration, Packet Pickup and Event Timeline
6:00 AM – Packet pickup and registration (if available) begins at race site
7:00 AM – 50K race start
7:30 AM – 25K race start
7:55 AM – Race day packet pick and registration closes
8:00 AM – 8M race start
3:00 PM – Finish line closes

General Questions
For more information, please follow the links at the top or bottom of the page, or check out our FAQ page.

Hayley Benson Smashes the Greenland 50K Course Record in 3:41:31

Benson Crushes Course Record at 2015 Greenland 50K

Pristine racing conditions set the stage for the 11th Annual Greenland Trail Races.  The event featured a 50K, 25K and 8 Mile, all of which circumvented the trails within the Greenland Open Space just south of Larkspur, CO.  Over 800 participants – newbies and veterans alike – took to the dirt-packed trails under scattered clouds […]

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