Here is an upcoming list of ultramarathon races in Colorado.
Click the name of the race to learn more.
Are you a race administrator or marketer and don’t see your upcoming ultramarathon on our list? No worries, you can add it here for free.
Upcoming Ultramarathons in Colorado (CO)
| 01/31/15 | 50 KM | Frozen Dead Guy 50K – Nederland |
| 02/21/15 | 50 KM | Headless Horsetooth 50K – Loveland |
| 03/14/15 | 100 KM | High Line Canal 100K – Platte Canyon Reservoir Parking Area |
| 04/25/15 | 50 M | Niwot’s Challenge – TBA |
| 05/03/15 | 50 KM | Cimarron 50k Endurance Run – Cimarron |
| 06/14/15 | 143 M | Desert R.A.T.S. ( Race Across The Sand ) – Loma to Rabbit Valley |
| 06/27/15 | 100 KM | Gunnison 100k Endurance Run – Gunnison |
| 08/22/15 | 100 M | Leadville 100 – Leadville |
Previous Ultramarathons in Colorado
| 07/11/14 | 100 M | Hardrock 100 – Silverton |
| 08/23/14 | 50 M 50 KM |
Devil Mountain Ultra – Cnr of Monument Park and Turkey Springs Rd |
| 09/06/14 | 100 KM 50 KM |
Tommyknocker Ultra – Woodland Park |
| 09/06/14 | 100 KM | Ultra Race of Champions ( UROC ) 100K Trail Race – Copper Mountain |
| 09/12/14 | 100 M | Run Rabbit Run 100 Mile – Steamboats Springs |
| 09/27/14 | 100 KM 50 KM 50 M |
The Bear Chase – Lakewood |
| 10/11/14 | 50 KM 100 KM 100 M |
24 Hours of Boulder – Boulder |
| 11/15/14 | 25 M | Monster Marathon – Golden |
| 11/29/14 | 27.95 M | Brass Knuckle Shuffle – Boulder |
Lead Adventurer at Nerve Rush
For three years, Alan traveled to 60+ countries as an international cost-of-living surveyor. Back in New York City, when he's not running, rock climbing or geeking out about UAV drones, Alan runs a marketing agency that helps companies generate more sales-ready leads using inbound marketing techniques.
Latest posts by Alan Perlman (see all)
- An Anatomically Correct Nut Tool for Climbers - 5 June, 2015
- Obstacle Race Training Guide - 4 June, 2015
- Using Night Vision in Extreme Sports - 25 March, 2015
