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Register2Register On-Line:
Register on-line by clicking here. The race is limited to the first 1,000 runners. Click here to confirm your entry.

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

Mail in Entry
Click here if you want to print out an entry form to mail it. No mail in entry forms will be accepted after May 1. Credit cards are not accepted for mail in entries. If you wish to use a credit card, please register online.

Elite Athletes:
Please click here for our competitive entry info.

Season Pass
Register for three or more events produced by Colorado Runner Events at once and save $5 per event. Click here for more information.

Register In-Store
Runners Roost is hosting registration for the Greenland Trail Races. Runners and walkers can visit any of the Denver metro stores to register for the race.

Runners Roost
1685 S. Colorado Blvd, Suite J
Denver, CO 80222
Runners Roost Lone Tree
9994 Commons Street Suite 230
Lone Tree, CO 80124
Runners Roost Aurora
6554 S. Parker Rd.
Aurora, CO 80016
Runners Roost Lakewood
7978 West Alameda Ave, Suite A
Lakewood, CO 80226
Runners Roost Louisville
459 S. McCaslin Blvd.
Louisville, CO 80027

Wish to Volunteer?
All volunteers get a free entry into another event produced by Colorado Runner Events. Please click here to volunteer.

Avoid The Rush!
Pre-race Packet Pickup and Registration
Thursday, May 4

5:00 PM to 7:00 PM
Runner Roost
121 N. Tejon St, Colorado Springs, CO 80903

Friday, May 5
5:00 PM to 7:00 PM
Runners Roost
9994 Commons Street, Lone Tree, CO 80124

Packet Pickup and Event Timeline:
6:00 AM – Packet pickup at race site begins.
7:00 AM – 50K races start
7:30 AM – 25K race start
8:00 AM – 8M race start
3:00 PM – Finish line closes

Cancellation Policy
Entry fees are non-refundable; race numbers and entries cannot be transferred to another year or person. No exceptions. This means once we have received your entry, you will not receive a refund if you cannot participate. Please follow us on Twitter and Facebook to stay up to date if there is inclement weather.