Found 249 races

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Connect with runners, find training partners, and celebrate every finish together

JUL
15

Commerce City, CO
• 30.3 miles
DescriptionSpend time in the original home of the Arapaho, Cheyenne, Lakota, and Ute people of Colorado. Emphasizing the history, cultural practices, and stewardship of indigenous people, a Park...
12
JUL
16

Colorado Springs, CO
• 113.9 miles
$35
A 5K wellness fundraiser in Colorado Springs benefiting the Philippine Nurses Association of America Foundation.
5K
41
JUL
18

Denver, CO
• 25.7 miles
$35
Join OCA Colorado for the annual 5K Panda Run & 1K Fun Walk, a fun-filled community event with a powerful purpose: helping local students pursue higher education right here in the Denver area,...
1K 5K
26
JUL
18

Aspen, CO
• 98.9 miles
$125 -$145
The Audi Power of Four Trail Run offers runners a scenic mix of trails across the mountains of Aspen Snowmass. Registrants can choose between the 3 distances offered including 50K, 25K & 10K.  
10K 25K 50K
63
JUL
18

Aurora, CO
• 26.8 miles
$7
On-campus 5K hosted by the CU Anschutz Run Club, raising money for DAWN, the free clinic.
5K
20
JUL
18

Alma, CO
• 41.0 miles
$10 -$30
Laid-back community Firefighter 5K and Doggie Dash in Alma, CO with a pancake breakfast.
5K
37
JUL
18

Littleton, CO
• 13.6 miles
$40
The 9th Annual Heritage Eagles 5K on the Liberty Bell course benefits the Heritage HS Cross Country Team.
5K
83
JUL
18

Steamboat Springs, CO
• 80.4 miles
$35 -$55
9.5 Mile and 5K trail run in the Steamboat Springs Running Series, northern Colorado mountains.
5K 9m
35
JUL
18

Castle Rock, CO
• 81.2 miles
$45 -$95
Join runners in Castle Rock for this half marathon.
5K 10K Half Marathon
336
JUL
18

Buena Vista, CO
• 95.6 miles
TransRockies Charity Bibs We are so excited to collaborate with TransRockies to offer charity bibs to this inspiring community! Join us on this 3-day running adventure through the Rockies and do...
31
JUL
19

Manitou Springs, CO
• 88.3 miles
$100
Historic 12.6-mile Pikes Peak mountain race up Barr Trail to Barr Camp.
100
JUL
19

Greeley, CO
• 72.8 miles
$25 -$40
Veteran suicide awareness 5k and 1 mile run benefiting NCVRC, with medal, shirt, and after party.
1m 5K
32
JUL
23

Boulder, CO
• 47.0 miles
$20
USATF-sanctioned all-comers summer track and field meet at CU Potts Field in Boulder, CO.
3K
21
JUL
24

Loveland, CO
• 70.7 miles
$25
Loveland, CO memorial 5K honoring Ryan Vomacka, supporting Mountain View High School running programs.
5K
24
JUL
25

Aspen, CO
• 98.9 miles
$100 -$260
http://www.aspenvalleymarathon.com
Half Marathon Marathon
59
JUL
25

Salida, CO
• 79.9 miles
$35 -$40
A 5.4-mile trail race on Salida, Colorado's S Mountain, open to all ages plus high school championships.
17
JUL
25

Pueblo, CO
• 54.2 miles
$50
8-week Galloway run/walk/run training clinic by Southern Colorado Runners in Pueblo, CO.
5K
111
JUL
25

Pine, CO
• 51.5 miles
DescriptionCome run with us in amazing Staunton State Park!This race day will offer a 10 mile distance.Play fun games from our rec trailer, visit our sponsors and vendor tents while you wait for...
10m
44
JUL
25

Aurora, CO
• 24.7 miles
$10 -$45
The 7/20 Foundation is proud to present the 5th annual Hero’s Journey 5k Run/Walk. This race makes its way through Aurora's City Center and the High Line canal trail with a start and finish in...
5K
39
JUL
26

Pueblo, CO
• 77.0 miles
$25
The SIC Mile The SIC Mile is 4 times around the track. You can team up with up to 4 people, but everyone must take a turn on each lap — meaning someone can run a few steps, then tag their partner...
2m
8