Found 173 races near Adams County, CO

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AUG
29

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

Centennial, CO
• 56.8 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
SEP
5

Brighton, CO
• 28.8 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
• 57.1 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
4
SEP
7

Loveland, CO
• 58.0 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
• 48.3 miles
$33 -$85
Celebrate the last blast of summer at the Labor Day Half Marathon
5K 10K Half Marathon
76
SEP
10

Greeley, CO
• 49.6 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
• 53.5 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

Greeley, CO
• 46.3 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
• 53.3 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

Denver, CO
• 19.3 miles
$44 -$60
The Denver 5k in Denver, CO - family-friendly community race featuring great community spirit and atmosphere
5K
574
SEP
13

Denver, CO
• 51.2 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

Loveland, CO
• 55.7 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....
24
SEP
13

Thornton, CO
• 59.3 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
54
SEP
18

Severance, CO
• 53.8 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
269
SEP
19

Westminster, CO
• 30.0 miles
$25 -$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
305
SEP
19

Denver, CO
• 41.7 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
14
SEP
19

Brighton, CO
• 59.8 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
1
SEP
19

Littleton, CO
• 53.7 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
15
SEP
20

Wheat Ridge, CO
• 44.9 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
39