Found 186 races

🎉 Join Your Local Running Community!

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

JUN
25

Alma, CO
• 66.5 miles
$10 -$155
At Town Park finisher beer, trail, scenic, family-friendly
6m 10K 13m Half Marathon 26m 40m
76
JUN
26

Bailey, CO
• 53.6 miles
$10 -$20
A first-annual dog-friendly 5K on Dump Road in Bailey, CO benefiting local non-profit Peaceworks.
5K
11
JUN
27

Evergreen, CO
• 32.1 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
27
JUN
27

Littleton, CO
• 36.9 miles
$45
Community 5K run/walk at Robert F. Clement Park before the fourth of July.
5K
37
JUN
27

Denver, CO
• 32.7 miles
$50 -$60
The Denver Pride 5K is more than just a race—it's a powerful way for supporters of The Center on Colfax to make a difference in the lives of Colorado’s LGBTQ+ community. This event serves as a...
5K
16
JUN
27

Arvada, CO
• 21.3 miles
$20
Free fun run 5k, yoga, and beer mile at a fitness expo in Arvada, CO
5K
23
JUN
27

Georgetown, CO
• 31.2 miles
$35 -$150
Hey Beautiful Slackers!   The 2026 Slacker Races will be held on June 27  Start Time 7:30am     There will be NO RACE DAY REGISTRATION  Get ready for an epic adventure at the 2026 Slacker...
4m Half Marathon
46
JUN
27

Glenwood Springs, CO
• 119.1 miles
$50 -$110
Welcome to the Sunlight Mountain Race Series brought to you by Arc'teryx Aspen, where mountain air, winding trails, and a vibrant community come together for an unforgettable summer of running....
5K 10K Half Marathon
25
JUN
28

Idaho Springs, CO
• 25.0 miles
$175 -$185
Although the air will be noticeably thin at the starting line, Echo Lake's 10,600 feet of elevation is just the beginning. The climb totals nearly 4,000 vertical feet - much of it above treeline...
14m
26
JUN
28

Littleton, CO
• 37.9 miles
$10 -$25
Community 1.5-mile run/walk in Littleton, CO raising concussion and CTE awareness.
9
JUL
4

Aspen, CO
• 98.7 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...
1m 5K 5m
46
JUL
4

Arvada, CO
• 21.3 miles
$5 -$6
Novelty mile at Colorado Tap House, Arvada: eat 10 donut holes across four quarter-mile loops.
9
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
10
JUL
4

Fairplay, CO
• 68.4 miles
$35
5K tour of Fairplay's River Park Trail with dirt/gravel trails and mountain views at 9,953 ft.
5K
45
JUL
4

Littleton, CO
• 48.2 miles
$55 -$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
37
JUL
4

Buena Vista, CO
• 14.3 miles
$30 -$35
Join us for the Independence Day 5K in Buena Vista, CO on July 4th, 2025!  
3K 5K
16
JUL
4

Colorado Springs, CO
• 4.9 miles
IF YOU HAVE A FOREVER BIB THERE IS NO NEED TO REGISTER.  YOU ARE ALREADY PRE-REGISTERED EACH MONTH. RACE STARTS AT 8:00 A.M.   THE START LINE CLOSES AT 8:05 A.M. This is a 2 mile race held the...
5
JUL
4

Palmer Lake, CO
• 33.9 miles
$20 -$50
Charity fun in Palmer Lake benefiting important causes with great community spirit
119
JUL
4

Pueblo, CO
• 42.6 miles
$19
Music festival run 5K trail with supporting local charities and scenic course
5K
103
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
20