Trail running Race Calendar in Colorado, United States

Dec

05

Sawmill Trail Runs

Pine, Colorado, United States

$60.00 - $120.00

Trail running

13K 26K Ultra

Feb

06

Stories Trail Runs

Colorado Springs, Colorado, United States

$60.00 - $100.00

Trail running Running

10.8K Half-Marathon 31.5K

Mar

13

22nd Annual Run Through Time Trail Marathon and Half Marathon

Salida, Colorado, United States

Trail running Running

Marathon Half-Marathon 3.2K

Apr

11

NoCo Urban Ultra & Relay

Bellvue, Colorado, United States

$105.00 - $150.00

Trail running

Ultra

May

01

Greenland Trail Races

Larkspur, Colorado, United States

$35.00 - $90.00

Trail running Running

Ultra 25K 12.9K 6.4K +2

May

15

Endure Trail Runs

Divide, Colorado, United States

$60.00 - $130.00

Running Trail running

11K 22.7K Marathon 12-Hour (Tiny Balls) +1

May

22

Samson's Revenge

Estes Park, Colorado, United States

$112.00 - $160.00

Trail running

10.5K 25K Ultra

Jun

05

Weld Your Mettle Running Festival

Eaton, Colorado, United States

$35.00 - $210.00

Trail running Running

Ultra 6.9K 22.5K Marathon +9

Jun

12

Summits Trail Runs

Granby, Colorado, United States

$60.00 - $130.00

Trail running

Elevation Challenge (14-hr) 9.8K 22.4K 44.7K +1

Jun

24

Race in the Clouds - Alma Dirt Festival

Alma, Colorado, United States

Free - $90.00

Running Mountain biking Duathlon Trail running

Weekend Camping FREE Kids Mountain Bike and Trail Run Ultra Marathon +7

Jul

09

Silverheels Trail Runs

Como, Colorado, United States

$60.00 - $375.00

Trail running

Ultra 17.4K 30.7K +2

Aug

07

Sheep Mountain Trail Runs

Fairplay, Colorado, United States

$80.00 - $160.00

Trail running

22.9K Ultra