Found 176 races

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5

Arvada, CO
• 23.2 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
23
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5

Brighton, CO
• 31.7 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....
10
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7

Parker, CO
• 11.2 miles
$33 -$85
Celebrate the last blast of summer at the Labor Day Half Marathon
5K 10K Half Marathon
81
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12

Littleton, CO
• 5.3 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
13
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12

Monument, CO
• 30.5 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
5
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12

Denver, CO
• 13.9 miles
$44 -$60
The Denver 5k in Denver, CO - family-friendly community race featuring great community spirit and atmosphere
5K
578
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13

Denver, CO
• 14.4 miles
$20 -$30
31st El Grito 5k run/walk - Sunday, September 13, 2026 at 9am Start & finish hosted by MSU Denver (900 Auraria Parkway, Denver, CO 80204) In 1994, a group of friends with a love for running,...
5K
1
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13

Denver, CO
• 13.7 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
27
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13

Palmer Lake, CO
• 28.7 miles
$35
A commemorative tribute honoring Colorado's fallen service members with a 1 mile walk and 5K run, ruck, or walk.
6
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13

Denver, CO
• 8.3 miles
$15 -$50
Who We Are: Healthy Kids Running Series is a five (5) week running program in the spring and fall for kids Pre-K through 8th grade. Each HKRS Series takes place once a week and offers...
0m 1m 2m 4m
5
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13

Thornton, CO
• 23.4 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
65
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19

Colorado Springs, CO
• 45.6 miles
$25
All Hands on Deck Pirates 5K in Colorado Springs. Register now for this exciting running event.
5K
75
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19

Westminster, CO
• 24.2 miles
$35 -$85
One of Colorado's favorite trails meets one of its most glorious parks at our 9th annual Fallfest! As courses wind southwest along Big Dry Creek Trail, the remarkable sight of Standley Lake with...
5K 10K Half Marathon
307
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19

Buena Vista, CO
• 39.3 miles
$30 -$100
Annual run in Buena Vista with supportive community atmosphere and race day excitement
5K 10K Half Marathon
271
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19

Denver, CO
• 17.1 miles
$25 -$40
Come join us for a fantastic day to celebrate inclusion and community! We welcome all levels of participants and we welcome all people- this is a no sorry zone.  This event is our largest...
5K
18
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19

Brighton, CO
• 27.6 miles
$30
9th Annual GUMMBALL 5K - In Honor of Fallen Deputy Heath Gumm The Gummball 5K will be run in honor of our fallen brother, Deputy Heath Gumm. He paid the ultimate sacrifice on January 24, 2018. ...
5K
3
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19

Littleton, CO
• 5.6 miles
$25 -$35
Miles 4 Madison is a 5K/1K Fun Run supported by Sterling Ranch CAB. Miles 4 Madison's goal is to provide educational and recreational opportunities for families with children with different...
1K 5K
17
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19

Manitou Springs, CO
• 47.2 miles
$200 -$225
13.32 miles and 7,867ft of elevation gain.   From Manitou Springs to the summit of Pikes Peak. This is not your average half marathon, it is a challenge unlike any other!  
42
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20

Aurora, CO
• 16.0 miles
$24 -$40
Youth and adult XC races from 1k to 5km. The courses are almost all grass, flattish, sometimes uneven, with small undulations, a small creek crossing, and bale jumps. The 3k & 5k races will start...
2K 3K 4K 5K
3
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20

Wheat Ridge, CO
• 16.8 miles
$10 -$30
The Farmers 5000 is likely one of the very first school-based 5K fundraisers in the state of Colorado. Since 1981, serious racers and weekend warriors alike have been coming to Wheat Ridge High...
5K
48