Found 330 races

🎉 Join Your Local Running Community!

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

AUG
22

Fraser, CO
$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
83
AUG
22

Westminster, CO
$45 -$55
Now in its 28th year, the Jog in the Bog 5K is a fun opportunity to get active while supporting SLHS.    Registration includes a commemorative t-shirt, goodie bag, entry into prize drawing, and...
5K
AUG
22

Denver, CO
$20 -$40
Run in Denver, CO with t-shirt
1m 5K
32
AUG
22

Pine, CO
$110 -$130
Welcome to the Staunton Rocks! Marathon & Half, an event put on by trail runners for trail runners. Touring the renowned singletrack of Staunton State Park in Colorado’s Front Range Mountains...
Half Marathon Marathon
60
AUG
23

Ridgway, CO
$30 -$45
Log Hill Hustle 5K & 10K – Run for the Views, Hustle for a Cause! Join us on August 23, 2026 for the 11th Annual Log Hill Hustle 5K & 10K, a scenic fun run/walk hosted by Fortuna Tierra Club in...
5K 10K
17
AUG
23

Westminster, CO
$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
271
AUG
23

Denver, CO
$8 -$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...
5K
24
AUG
25

Bellvue, CO
$25 -$30
Join us August 5, 12, 19 & 26 for a fun series of shorter midweek trail races. This fourth race of the series will take place on the fast and flat Valley Trail at Lory State Park. Our goal is to...
12K
24
AUG
27

Commerce City, CO
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...
5
AUG
29

Steamboat Springs, CO
5 Mile, 16 Mile and 50K trail races in Steamboat Springs, Colorado
5m 16m 50K
27
AUG
29

Littleton, CO
$35 -$75
Glow & Roll is an inclusive, dusk-time 5K Walk/Run/Roll (with a 1.6-mile option) A glow-filled, twilight experience with lights, music and day-glow swag that transforms the event into a...
1m 5K
3
AUG
29

Elizabeth, CO
$10 -$25
Elizabeth Main Street 5K Run/Walk & Family Color Run August 29, 2026 · Elizabeth, Colorado Join us for a community celebration in the heart of Elizabeth! Our 5K Run/Walk winds through historic...
5K
2
AUG
29

Aurora, CO
$20 -$50
Dog-friendly trail 5K with pancake breakfast and vendor marketplace for PAWSitivity
5K
125
AUG
29

Colorado Springs, CO
$30 -$45
In partnership, The YMCA of the Pikes Peak Region and the Colorado Springs Sports Corp want to bring you the Rocky Mountain 5K presented by School District 11, the official 5K of the Rocky...
1K 5K
41
AUG
29

Centennial, CO
$30 -$45
🎀 Join the Fight: Breast Cancer Run! 🎀Lace up and make a difference at our annual Breast Cancer Run! Together, we can raise awareness and funds to support those affected by breast cancer. Enjoy a...
1m 5K 10K Half Marathon
21
AUG
29

Allenspark, CO
$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
9
AUG
29

Durango, CO
$99 -$149
Half marathon road with challenging terrain and post-race festivities
Half Marathon Marathon
89
AUG
30

Canon City, CO
$15 -$55
Like Running or Walking?  Love Wine?  This race is for you!  Join us on Sunday, August 30, 2026 for an exciting annual event that features the amazing scenery and landscape of The Winery At Holy...
5K
34
SEP
5

Pueblo, CO
Running event scenic family-friendly road race
5K 10K
92
SEP
5

Keystone, CO
$80 -$90
Prizes Prizes will be distributed at the end of each race and for the overall series winners
61