Found 250 races

🎉 Join Your Local Running Community!

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

JUL
18

Castle Rock, CO
• 34.6 miles
$40 -$95
Join runners in Castle Rock for this half marathon.
5K 10K Half Marathon
292
JUL
18

Buena Vista, CO
• 77.1 miles
TransRockies Charity Bibs We are so excited to collaborate with TransRockies to offer charity bibs to this inspiring community! Join us on this 3-day running adventure through the Rockies and do...
11
JUL
19

Manitou Springs, CO
• 13.1 miles
$90 -$500
  The Barr Trail Mountain Race is one of the Front Range’s historic summer mountain running events. The 12.6-mile course begins at the Cog Railway Station (6,570 ft) in Manitou Springs, Colorado,...
45
JUL
23

Boulder, CO
• 12.2 miles
$20
Fun for all, from newcomers of any age racing for the first time to veteran competitors looking to test their fitness, all in a friendly, welcoming environment. We are back at CU Potts...
10
JUL
25

Alamosa, CO
• 113.2 miles
$18 -$25
5K run/walk hosted by the loved ones of Diana Cantu.  Remembering our mother, Diana Cantu, and honoring her legacy. She bravely fought this disease as the resilent person that she was.  The Cantu...
5K
11
JUL
25

Salida, CO
• 72.8 miles
$25 -$40
The National High School Trail Championship (NHSTC) is a 5.4 mile trail race for high school athletes and includes 2026 high school graduates and incoming freshmen. The fourth running of the...
4
JUL
25

Pueblo, CO
• 38.8 miles
$50
Want to start running but don’t know where to start? Want to get back into running and need a plan? The Southern Colorado Runners are hosting an 8-week training clinic designed to help you...
5K
10
JUL
25

Pine, CO
• 31.8 miles
DescriptionCome run with us in amazing Staunton State Park!This race day will offer a 10 mile distance.Play fun games from our rec trailer, visit our sponsors and vendor tents while you wait for...
10m
14
JUL
25

Pine, CO
• 31.8 miles
DescriptionCome run with us in amazing Staunton State Park!This race day will offer a 5k distance.Play fun games from our rec trailer, visit our sponsors and vendor tents while you wait for your...
5K
11
JUL
25

Aurora, CO
• 18.9 miles
$10 -$45
The 7/20 Foundation is proud to present the 5th annual Hero’s Journey 5k Run/Walk. This race makes its way through Aurora's City Center and the High Line canal trail with a start and finish in...
5K
17
JUL
26

Golden, CO
• 12.8 miles
$30 -$40
Spirit of the West 5K Run/Walk in Golden, CO - community 5K race featuring great community spirit and atmosphere
5K
135
AUG
1

Aurora, CO
• 16.8 miles
$12 -$47
Join Us for the 12th Annual Run for the Ring 5K & Kids Fun Run! Over the past 12 years, the Run for the Ring 5K & Kids Fun Run has brought together Barbara Davis Center patients, loyal type 1...
5K
11
AUG
1

Denver, CO
• 13.6 miles
Whether you’re a seasoned runner or just love to walk and take in the scenery, SKECHERS Wicked Wine Run is for you! Each course will be held on beautiful properties or various partner vineyards...
1K 5K
18
AUG
1

Colorado Springs, CO
• 8.0 miles
$35 -$65
Beat the heat and treat yourself at the Popsicle 5K/10K/Half Marathon—a sweet celebration of summer miles and frozen rewards. Whether you’re racing the speedy 5K, cruising through the 10K, or...
5K 10K Half Marathon
36
AUG
1

Colorado Springs, CO
• 7.9 miles
$40 -$65
Beat the heat and treat yourself at the Popsicle 5K/10K/Half Marathon—a sweet celebration of summer miles and frozen rewards. Whether you’re racing the speedy 5K, cruising through the 10K, or...
5K 10K Half Marathon
9
AUG
1

Parker, CO
• 27.8 miles
$25
RunAbilities FUN Walk/Run/Roll Join Parker Recreation and Square Peg Therapies for our annual RunAbilities FUN Walk/Run/Roll! Now in its fourth year, RunAbilities FUN Walk/Run/Roll is a...
2m
2
AUG
1

Fairplay, CO
• 67.8 miles
$100 -$180
The Human Potential Running Series Presents: The Sheep Mountain Trail Runs @ Fairplay, CO Come ready my friends, this...
Half Marathon 50K
86
AUG
1

Colorado Springs, CO
• 13.1 miles
$25
Join us at Mount Saint Francis of Assisi on August 1st for a morning of community and purpose! Whether you prefer a scenic 1-mile stroll or want to tackle our brand-new 5K challenge, every step...
1m 5K
5
AUG
1

Highlands Ranch, CO
• 50.8 miles
$17 -$56
5K road featuring competitive racing and community celebration
5K
47
AUG
2

Denver, CO
• 68.0 miles
$45 -$115
Have you been dreaming of running the Boston Marathon? Need to shave a few minutes off your qualifying time? Or maybe you're just looking for the perfect course to set a new PR? Whether Boston is...
Half Marathon Marathon
53