Found 212 races

🎉 Join Your Local Running Community!

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

JUN
28

Littleton, CO
• 82.3 miles
$10 -$25
Cade's Cause Cade's Cause is a community event created to honor Dr. Cade Carlson, raise awareness about the lasting impact of concussions and repetitive head impacts, and turn our unimaginable...
2
JUL
4

Aspen, CO
• 87.5 miles
$65 -$150
Join us for the 40th Annual Boogie's Buddy Race, Presented by Aspen Valley Health!Saturday, July 4, 2026  Rio Grande Park Aspen: 427 Rio Grande Pl, Aspen Kick off your Fourth of July weekend at...
5K
32
JUL
4

Arvada, CO
• 94.4 miles
$5 -$6
Join us as we take on the Donut Hole Mile to be held as part of our 4th of July celebration! If you're familiar with a traditional Beer Mile, the donut hole mile is a fun twist for all ages! Run...
3
JUL
4

Castle Rock, CO
• 34.1 miles
$43 -$55
Please visit our official race website at www.runtochangelives.org for more registration options.
1K 5K Half Marathon
1
JUL
4

Fairplay, CO
• 58.8 miles
$35
New for this year, the Burro Buster 5K takes runners on an exciting tour of Fairplay's River Park Trail, combining historic downtown streets, scenic trails, and beautiful mountain views. Starting...
5K
41
JUL
4

Littleton, CO
• 48.2 miles
$45 -$65
Kick off your 4th of July with a family-friendly and festive 5K on Saturday, July 4, beginning at 7:30 a.m.! Celebrate Independence Day with a fun morning on the move — this spirited run/walk...
5K
34
JUL
4

Buena Vista, CO
• 87.7 miles
$30 -$35
Join us for the Independence Day 5K in Buena Vista, CO on July 4th, 2025!  
3K 5K
13
JUL
4

Palmer Lake, CO
• 18.1 miles
$20 -$50
Charity fun in Palmer Lake benefiting important causes with great community spirit
115
JUL
4

Pueblo, CO
• 42.6 miles
$19
Music festival run 5K trail with supporting local charities and scenic course
5K
97
JUL
4

Winter Park, CO
• 101.0 miles
$40
Continue your 4th of July celebration and join us in beautiful Winter Park, Colorado Unfiltered, for the Rendezvous Run for Independence 5k Run/Walk.  The 5K run/walk starts at  the Gondola Plaza...
5K
18
JUL
6

Keystone, CO
• 81.9 miles
$1350
High altitude running camp for HS athletes
39
JUL
10

Como, CO
• 62.1 miles
$80 -$385
The Human Potential Running Series Presents: The Silverheels Trail Runs @ COMO ROUNDHOUSE The Silverheels Trail Runs ...
60K 100K
73
JUL
11

Westminster, CO
• 99.3 miles
$35 -$85
Get ready for a sun-soaked adventure and a fantastic mid-season challenge with our 13th Annual Dog Days 5K, 10K & Half Marathon, benefiting Do Over Dogs! Held in a central location between Denver...
5K 10K Half Marathon
173
JUL
11

Denver, CO
• 90.8 miles
$33 -$40
Cookie Chase in Denver, CO - annual community running event featuring great community spirit and atmosphere
5K
40
JUL
11

Denver, CO
• 91.9 miles
$10 -$35
Move your way. Connect in community. Support health—body and mind. Join the Denver-Rocky Mountain Association of Black Psychologists for the DRMABPsi 1–5K Walk, Run & Roll, an inclusive,...
1K 2K 3K 4K 5K
8
JUL
11

Crested Butte, CO
• 85.9 miles
$90 -$110
Historic race trail featuring competitive racing and community celebration
15K 25K
79
JUL
11

Littleton, CO
• 48.9 miles
$17 -$85
Join us for the Heatwave Half Marathon, 10K, & 5K!A sun-soaked summer challenge that’s perfect for the whole family. The fun includes – Great Swag – designer shirt & custom medalChip-timing with...
1m 5K 10K Half Marathon
47
JUL
12

Lakewood, CO
• 84.6 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 race uses a handicap...
2m
29
JUL
13

Keystone, CO
• 81.9 miles
High altitude running camp for HS athletes
42
JUL
16

Colorado Springs, CO
• 41.2 miles
$35
This 5K Run/Walk event is in conjunction with the 47th PNAA National Convention in Colorado Springs, CO. 5K Start and Finish Location: Colorado Springs, CO MAP INSERT Bib Pick-Up July 15th PNAA...
5K
24