Found 226 races

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AUG
29

Colorado Springs, CO
• 113.1 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
43
AUG
29

Allenspark, CO
• 90.9 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
10
AUG
30

Lone Tree, CO
• 76.2 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
SEP
5

Arvada, CO
• 80.8 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
20
SEP
5

Brighton, CO
• 55.9 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

Loveland, CO
• 68.1 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
6
SEP
7

Loveland, CO
• 68.9 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
• 73.4 miles
$33 -$85
Celebrate the last blast of summer at the Labor Day Half Marathon
5K 10K Half Marathon
77
SEP
10

Greeley, CO
• 48.8 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
13
SEP
12

Littleton, CO
• 78.3 miles
$40 -$50
The National Federation of the Blind of Colorado 6 Dot Dash presented by Waymo 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
• 76.0 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
• 52.5 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
• 63.2 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
• 97.5 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
3
SEP
12

Denver, CO
• 72.1 miles
$44 -$60
The Denver 5k in Denver, CO - family-friendly community race featuring great community spirit and atmosphere
5K
577
SEP
13

Denver, CO
• 68.2 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
SEP
13

Palmer Lake, CO
• 98.0 miles
$35
Join us on Sunday, September 14, 2025, at Palmer Lake Regional Recreation Area for the 7th Annual Colorado Run for the Fallen—an up to 6-hour untimed run/walk/ruck hosted by the Honor and...
5
SEP
13

Loveland, CO
• 67.5 miles
$15 -$30
Are you ready to challenge yourself? We will have a 1-mile loop open for 1 ½ hrs. Who can run the most loops in 1 ½ hrs? Who can run the fastest? We will have awards for different categories....
26
SEP
13

Thornton, CO
• 65.2 miles
$10 -$15
Rocky Mountain Road Runners holds a monthly Trophy Series in the Denver area.  We provide a low-key, low-cost racing environment. Everyone is welcome to run with us! The 10km race uses a handicap...
5K 10K
62
SEP
18

Severance, CO
• 57.6 miles
$35 -$45
Unique nighttime glow-themed 5K run/walk in Severance, CO during Severance Days festival. Professionally timed with DJ entertainment and post-race party.
5K
270