Found 157 races

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JUL
11

Denver, CO
• 36.1 miles
$36 -$40
Cookie Chase in Denver, CO - annual community running event featuring great community spirit and atmosphere
5K
52
JUL
11

Denver, CO
• 29.6 miles
An inclusive 1-5K walk, run & roll in Denver hosted by the Assoc. of Black Psychologists.
1K 2K 3K 4K 5K
18
JUL
11

Littleton, CO
• 27.7 miles
$17 -$85
Join us for the Heatwave Half Marathon, 10K, & 5K!A sun-soaked summer challenge that’s perfect for the whole family. The fun includes – Great Swag – designer shirt & custom medalChip-timing with...
1m 5K 10K Half Marathon
55
JUL
12

Lakewood, CO
• 33.9 miles
$10 -$15
Rocky Mountain Road Runners holds a monthly Trophy Series in the Denver area.  We provide a low-key, low-cost racing environment. Everyone is welcome to run with us! The race uses a handicap...
2m
54
JUL
15

Commerce City, CO
• 49.7 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...
2
JUL
18

Denver, CO
• 34.2 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
19
JUL
18

Aurora, CO
• 29.5 miles
$7
On-campus 5K hosted by the CU Anschutz Run Club, raising money for DAWN, the free clinic.
5K
12
JUL
18

Littleton, CO
• 26.7 miles
$35 -$40
The 9th Annual Heritage Eagles 5K on the Liberty Bell course benefits the Heritage HS Cross Country Team.
5K
80
JUL
18

Castle Rock, CO
• 16.3 miles
$45 -$95
Join runners in Castle Rock for this half marathon.
5K 10K Half Marathon
331
JUL
23

Boulder, CO
• 41.2 miles
$20
USATF-sanctioned all-comers summer track and field meet at CU Potts Field in Boulder, CO.
3K
17
JUL
24

Loveland, CO
• 15.2 miles
$25
Loveland, CO memorial 5K honoring Ryan Vomacka, supporting Mountain View High School running programs.
5K
22
JUL
25

Pine, CO
• 43.0 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
36
JUL
25

Aurora, CO
• 26.7 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
34
AUG
1

Aurora, CO
• 29.1 miles
$15 -$47
Professionally timed 5K Run/Walk & Kids Fun Run at the Barbara Davis Center, benefiting the Children's Diabetes Foundation.
5K
21
AUG
1

Denver, CO
• 31.8 miles
Whether you’re a seasoned runner or just love to walk and take in the scenery, SKECHERS Wicked Wine Run is for you! Each course will be held on beautiful properties or various partner vineyards...
1K 5K
30
AUG
1

Denver, CO
• 35.8 miles
$15 -$55
Together We Can End Impaired Driving For Good. The 2026 Move With MADD Denver is Mothers Against Drunk Driving (MADD)'s signature fundraising event to help us raise awareness and funds to end...
5K
1
AUG
1

Parker, CO
• 17.1 miles
$25
Sensory-friendly two-mile Walk/Run/Roll for all abilities in Parker, CO, with bike ride option.
2m
9
AUG
1

Highlands Ranch, CO
• 14.4 miles
$17 -$56
5K road featuring competitive racing and community celebration
0m 5K
57
AUG
6

Boulder, CO
• 41.2 miles
$20
NO Race Day Registrations Fun for all, from newcomers of any age racing for the first time to veteran competitors looking to test their fitness, all in a friendly, welcoming environment. Held at...
1m
25
AUG
6

Eldorado Springs, CO
• 47.1 miles
$30
A scenic four-mile charity run through Eldorado Canyon benefiting the Colorado Cancer Foundation.
21