Found 238 races

🎉 Join Your Local Running Community!

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

JUN
13

Thornton, CO
• 19.7 miles
$17 -$85
Every Registration IncludesGreat Swag - designer shirtCustom medalChip-timing with live results and awardsFree photosGreat snacks at the finish line!Plenty of fun!Grab your friends and family,...
1m 5K 10K 15K
32
JUN
13

Broomfield, CO
• 25.2 miles
$35
Grab those tutus and come run with us to raise money for the Colorado Conservatory of Dance. This run/walk will be a party full of smile, music, and dancing! The 5K is a 3 loop course on a...
5K
23
JUN
14

Littleton, CO
• 11.6 miles
$40 -$84
                                               Run the Race. Stay for the Party. 
5K 10K
16
JUN
19

Littleton, CO
• 8.4 miles
$45 -$50
Looking for something to do with the whole family on Father's Day Weekend? Look no further than the Happy Hour Half K on Friday, June 19, starting at 6:00 p.m., at Civic Green Park in Highlands...
13
JUN
20

Dacono, CO
• 29.9 miles
Muddy Dash is not your average mud run! Get ready for up to 3 Miles of messy mayhem. You and your friends/family can expect to run, walk, crawl, wade, slip, slide, and scream with excitement as...
55
JUN
20

Parker, CO
• 15.1 miles
$40 -$50
Dash Across the Dam Father’s Day 5K with RNK Running & Walking Date: June 20, 2026Time: 5K: 8 a.m.  Location: Rueter-Hess Reservoir5K Event Fee: Starts at $40* (plus processing fee)Price increase...
5K
24
JUN
20

Windsor, CO
• 30.9 miles
$15 -$130
Family-friendly fun in Windsor welcoming runners and walkers of all ages
1m 5K 10K Half Marathon
296
JUN
20

Loveland, CO
• 53.1 miles
$10 -$40
Thank YOU for supporting this wonderful cause.                                                                    Sierra's 5K Run/Walk entrees include:                                            ...
5K
29
JUN
20

Thornton, CO
• 19.4 miles
$24 -$61
5K road featuring competitive racing and community celebration
5K
205
JUN
21

Boulder, CO
• 38.3 miles
$25
IN-PERSON-SUNDAY, JUNE 21st START AND FINISH AT FRANKLIN FIELD, CU BOULDER CAMPUS REGISTRATION FEES: Individual: $30/Person Duo: $55/Group of 2 Family (Up to 5 Individuals): $110/Family The 14th...
5K
16
JUN
21

Arvada, CO
• 26.1 miles
$10 -$60
1 Mile in Arvada. Join runners of all abilities
1m 5K 10K 10m
124
JUN
21

Denver, CO
• 16.2 miles
$25 -$45
Lace up your sneakers and come celebrate with Black Women Run and Embrace the Pace Run Club at our 2nd Juneteenth Fun Run 5K! The Juneteenth Fun Run/Walk is an annual community celebration where...
5K
8
JUN
21

Boulder, CO
• 38.3 miles
$20 -$80
Join us on Sunday, June 21st, for the Sunset Trail Running Festival in Gold Hill, CO! Hosted by The Boulder Watershed Collective and in collaboration with T.E.A.M Boulder, all money raised from...
1K 5K 12K 28K
14
JUN
23

Louisville, CO
• 31.0 miles
$30
A 5K (ish) for our school, our kids, and our community. Join us for The Red Schoolhouse Run — a fundraiser run benefiting Jefferson Street Preschool! From stroller-pushers to seasoned runners,...
7
JUN
25

Boulder, CO
• 37.1 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 Pott’s Field on...
10
JUN
25

Alma, CO
• 125.1 miles
$10 -$155
At Town Park finisher beer, trail, scenic, family-friendly
6m 10K 13m Half Marathon 26m 40m
73
JUN
26

Bailey, CO
• 46.6 miles
$10 -$20
Come one, come all to the first annual "Four Legged 5k" foot race, organized and hosted by the Bailey Chamber of Commerce and benefitting one of our local non-profit organizations, Peaceworks!...
5K
6
JUN
27

Evergreen, CO
• 36.1 miles
DescriptionCome run with us in beautiful Evergreen at Alderfer/3 Sisters Park!This race day will offer a 10k race coursing through the amazing park.Play fun games from our rec trailer, visit our...
10K
21
JUN
27

Evergreen, CO
• 36.1 miles
DescriptionCome run with us in beautiful Evergreen at Alderfer/3 Sisters Park!This race day will offer a 5k race coursing through the amazing park.Play fun games from our rec trailer, visit our...
5K
10
JUN
27

Littleton, CO
• 21.4 miles
$45
Come join the Before The Fourth 5k for some healthy fun in Clement Park on June 27th.  The park is located just south of Denver, in Littleton, Colorado. This is a great opportunity to build...
5K
33