Found 297 races

🎉 Join Your Local Running Community!

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

AUG
29

Colorado Springs, CO
• 91.6 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
• 46.2 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
• 11.1 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
SEP
5

Keystone, CO
• 44.9 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
• 20.4 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
• 31.5 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
6

Colorado Springs, CO
• 94.9 miles
$17 -$78
Join us for the annual Hometown Half Marathon & 5k/10k! A run local-themed event that is perfect for the whole family.The fun includes - Great Swag - designer shirt & custom medal Chip-timing...
1m 5K 10K Half Marathon
56
SEP
7

Loveland, CO
• 27.2 miles
$65
See the Northern Colorado All-Ability communities come together in faith and sports through FCA All-Abilities. We are running for: Awareness of sports programs for all ages for individuals with...
5K
4
SEP
7

Loveland, CO
• 27.2 miles
$10 -$65
Join us for the Labor Day 5kSee the Northern Colorado All-Ability communities come together in faith and sports through FCA All-Abilities. We are running for: Uniting All-Abilities through faith...
5K
2
SEP
7

Parker, CO
• 51.6 miles
$33 -$85
Celebrate the last blast of summer at the Labor Day Half Marathon
5K 10K Half Marathon
76
SEP
7

Oak Creek, CO
• 84.7 miles
$25
The Running Series is excited to have the Oak Creek No Fun Run on our schedule again! Please join us in remembering long-time Running Series competitor Larry Brooks, a former organizer of the Oak...
5K
38
SEP
10

Greeley, CO
• 42.0 miles
$15 -$45
✨🦸 Welcome to the 14th Annual Superhero Run! 🦸✨ This isn’t just a race - it’s a chance to make an impact by stepping up for others. On Saturday, September 19, 2026, we’ll be back at Greeley’s...
1m 5K 10K
9
SEP
12

Littleton, CO
• 38.1 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

Bellvue, CO
• 38.7 miles
$110 -$125
The Black Squirrel Half Marathon will take place on the wonderful trails of Lory State Park to the northeast of Fort Collins, Colorado. The half marathon course offers a tour of the outer...
Half Marathon
29
SEP
12

Greeley, CO
• 38.4 miles
$35 -$45
Join us for the For the City Network 5K, a community run/walk dedicated to strengthening neighborhoods, supporting families, and creating positive change across Weld County. This event is open to...
5K
20
SEP
12

Loveland, CO
• 30.1 miles
$5 -$15
Come join us for a 1-mile fun run, as we kick off the Wild Wonderful Saturday events. Plan to stay and check out the Wild Zone. Welcome adventurers, explorers, and vine-swinging daredevils! You...
4
SEP
12

Monument, CO
• 73.1 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
• 31.7 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
• 94.8 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
SEP
13

Denver, CO
• 36.0 miles
$20 -$51
The 9/11 Heroes Run 5K welcomes runners, ruckers, and walkers of all ages and fitness levels to honor the heroes of 9/11 and those who've served our nations since. We activate & unite communities...
5K
26