Found 167 races

🎉 Join Your Local Running Community!

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

JUL
15

Commerce City, CO
• 16.0 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
18

Denver, CO
• 60.1 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

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

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

Castle Rock, CO
• 24.4 miles
$45 -$95
Join runners in Castle Rock for this half marathon.
5K 10K Half Marathon
336
JUL
19

Greeley, CO
• 39.5 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
• 6.6 miles
$20
USATF-sanctioned all-comers summer track and field meet at CU Potts Field in Boulder, CO.
3K
21
JUL
24

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

Pine, CO
• 35.8 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
• 53.2 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
AUG
1

Aurora, CO
• 52.4 miles
$15 -$47
Professionally timed 5K Run/Walk & Kids Fun Run at the Barbara Davis Center, benefiting the Children's Diabetes Foundation.
5K
25
AUG
1

Denver, CO
• 53.7 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
35
AUG
1

Denver, CO
• 16.6 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
8
AUG
1

Parker, CO
• 34.3 miles
$25
Sensory-friendly two-mile Walk/Run/Roll for all abilities in Parker, CO, with bike ride option.
2m
17
AUG
1

Highlands Ranch, CO
• 65.4 miles
$17 -$56
5K road featuring competitive racing and community celebration
0m 5K
63
AUG
6

Boulder, CO
• 6.6 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
33
AUG
6

Eldorado Springs, CO
• 46.4 miles
$30
A scenic four-mile charity run through Eldorado Canyon benefiting the Colorado Cancer Foundation.
21
AUG
7

Centennial, CO
• 16.9 miles
$10 -$15
August may be hot...but still a great time to run, and we hope you'll come join the runners of RMRR. We'll run our August 5k on the Highline Canal around DeKoevend Park.  As always, everyone is...
5K
115
AUG
8

Arvada, CO
• 17.2 miles
$35 -$353
12th annual end-of-summer celebration on Ralston Creek Trail with Half Marathon, 10K, and 5K distances. Official BOLDERBoulder qualifier supporting veterans.
5K 10K Half Marathon
208
AUG
8

Centennial, CO
• 15.5 miles
$35 -$40
Run. Support. Celebrate.Join us for the 7th Annual Arapahoe Warrior 5K and support the Arapahoe Warrior Cross Country Team! With $10 from every registration going directly to the Arapahoe Cross...
5K
79