Found 176 races

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AUG
16

Denver, CO
• 11.3 miles
$40 -$55
5K run/walk fundraiser for Cancer League of Colorado, funding cancer research and patient services.
5K
8
AUG
16

Erie, CO
• 36.0 miles
$45 -$85
5K road featuring competitive racing and community celebration
5K Half Marathon
141
AUG
16

USAF Academy, CO
• 36.6 miles
$20 -$24
Looking to run the fastest mile of your life? Dropping over 220 feet from start to finish, the Flying Falcon Downhill Mile is designed to help you chase a massive personal best while experiencing...
3
AUG
22

Centennial, CO
• 4.4 miles
$39
Our annual 5K/10K Run or Walk to Support Susie's Higher-Ed Fund   We'll be returning to Family Worship Center for the start and finish of this year's 5K/10K.  Our event will take place on August...
5K 10K
14
AUG
22

Evergreen, CO
• 22.9 miles
DescriptionCome run with us in beautiful Evergreen to the top of Bergen Peak at gorgeous Elk Meadow Park!This race day will offer a Half Marathon distance. The Half Marathon will take you to the...
Half Marathon Marathon
25
AUG
22

Fraser, CO
• 52.7 miles
$60 -$85
Push your limits with these stunning, remote races in the heart of the Rocky Mountains - located just 60 miles outsid...
5K Half Marathon
87
AUG
22

Louisville, CO
• 29.9 miles
$30
The Coyote Chase 5k is a 5k race that supports the Monarch HS XC program. The race is on the Monarch HS campus and is a 2k loop that consists of grass, dirt and concrete. The grass portion of the...
5K
2
AUG
22

Westminster, CO
• 25.3 miles
$45 -$55
A 28th-annual 5K supporting SLHS, with $15 of each fee going to a team of your choice.
5K
4
AUG
22

Denver, CO
• 14.0 miles
$20 -$40
Run in Denver, CO with t-shirt
1m 5K
36
AUG
22

Pine, CO
• 21.7 miles
$110 -$130
Scenic singletrack trail marathon and half marathon in Staunton State Park, Colorado.
Half Marathon Marathon
62
AUG
23

Westminster, CO
• 24.8 miles
$40 -$95
Welcome to the Pioneer Prairie Dog Half Marathon event; the one that started the series! With 10k and 5k events too!  Everyone is back to school and slipping into a routine.  Make this your...
5K 10K Half Marathon
315
AUG
23

Denver, CO
• 13.7 miles
$10 -$55
Be part of something bigger at Conservation Colorado’s second annual Rebel Run 5K — where movement meets momentum for our climate, air, land, water and communities. Last year, more than 230...
2m 5K
29
AUG
24

Evergreen, CO
• 19.6 miles
DescriptionInternet Registration has not begun yet. Check Registration Dates in details.Fall 2026 JeffCo League MS Cross CountryAug 24 - Oct 14RMAE practice- Mon/Wed 3:45-4:45pm @ RMAEJeffco...
7
AUG
27

Commerce City, CO
• 18.7 miles
DescriptionPut your problem-solving skills to the test in this exciting puzzlingcompetition! Participants will race against the clock to completea 300-piece jigsaw puzzle. Whether you’re a...
6
AUG
29

Littleton, CO
• 6.9 miles
$35 -$75
Inclusive dusk-time 5K/1.6-mile Walk/Run/Roll at Clement Park with lights, music and glow swag.
1m 5K
5
AUG
29

Elizabeth, CO
• 24.0 miles
$10 -$25
A community 5K through historic Elizabeth Main Street plus an untimed Family Color Run.
5K
5
AUG
29

Aurora, CO
• 16.6 miles
$20 -$50
Dog-friendly trail 5K with pancake breakfast and vendor marketplace for PAWSitivity
1m 5K
127
AUG
29

Colorado Springs, CO
• 49.6 miles
$30 -$45
The official 5K of the Rocky Mountain State Games at America the Beautiful Park, benefiting the YMCA.
1K 5K
44
AUG
29

Allenspark, CO
• 54.0 miles
$20 -$55
Hello Runners and Dog Lovers! Welcome to the 14th annual Run Like The Wind 5k / 2k run in Allenspark on Labor Day weekend - Saturday, August 29th at 9am, hosted by the Old Gallery.  Register now...
2K 5K
12
AUG
30

Lone Tree, CO
• 5.4 miles
$30 -$35
Rolling hills and beautiful views are all a part of this challenging 8K trail run through the Bluffs Regional Park.   For this race, we ask people only register if they are able to keep at least...
8K
3