Found 241 races

🎉 Join Your Local Running Community!

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

AUG
22

Pine, CO
• 59.4 miles
$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

Westminster, CO
• 76.4 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
271
AUG
23

Denver, CO
• 63.0 miles
$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
27

Commerce City, CO
• 69.0 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...
5
AUG
29

Littleton, CO
• 57.7 miles
$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
• 37.2 miles
$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
• 55.8 miles
$20 -$50
Dog-friendly trail 5K with pancake breakfast and vendor marketplace for PAWSitivity
5K
125
AUG
29

Colorado Springs, CO
• 7.6 miles
$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
• 4.6 miles
$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
• 54.3 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
9
AUG
30

Canon City, CO
• 39.0 miles
$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
• 36.4 miles
Running event scenic family-friendly road race
5K 10K
92
SEP
5

Keystone, CO
• 86.4 miles
$80 -$90
Prizes Prizes will be distributed at the end of each race and for the overall series winners
61
SEP
5

Arvada, CO
• 24.4 miles
$25
Lace up your shoes and join us for the Demon Dash at its new course at the NAAC! We're excited to bring this course its new home and onto dirt! Whether you are a runner or walker, this will be a...
5K
16
SEP
5

Brighton, CO
• 26.0 miles
$55 -$150
Introducing the Raising the Barr Ultra Race.  Try to finish as many 10 mile loops around the lake in the first 4 or 10 hours and then switch to 1 mile loops for the last few hours of your race....
8
SEP
7

Parker, CO
• 8.3 miles
$33 -$85
Celebrate the last blast of summer at the Labor Day Half Marathon
5K 10K Half Marathon
76
SEP
12

Littleton, CO
• 8.4 miles
$40 -$50
The National Federation of the Blind of Colorado 6 Dot Dash presented by Comcast is an annual 5k event to raise awareness and funds for the National Federation of the Blind of Colorado/Colorado...
5K
9
SEP
12

Monument, CO
• 34.2 miles
$30 -$75
Run4Hope 5K for Schools is an in-person competitive 5k, 2-mile Family Color Run (or walk), followed by a huge Community Block Party and free BBQ to celebrate HOPE in El Paso County! This event is...
5K
SEP
12

Denver, CO
• 11.7 miles
$44 -$60
The Denver 5k in Denver, CO - family-friendly community race featuring great community spirit and atmosphere
5K
574
SEP
12

Buena Vista, CO
• 76.9 miles
$65 -$100
A Half Marathon and 10K that twist and turn through sage brush and ponderosa pines, all while providing stunning views of the prestige Collegiate Peaks. Located in the Rocky Mountains along the...
10K Half Marathon
34