Found 175 races near Adams County, CO

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JUN
19

Littleton, CO
• 44.8 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
• 39.5 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
• 18.7 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
• 46.8 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
• 55.1 miles
$10 -$40
Thank YOU for supporting this wonderful cause.                                                                    Sierra's 5K Run/Walk entrees include:                                            ...
5K
29
JUN
20

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

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

Denver, CO
• 35.7 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
23

Louisville, CO
• 46.4 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
27

Littleton, CO
• 42.3 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
JUN
27

Denver, CO
• 38.1 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
13
JUN
27

Arvada, CO
• 47.8 miles
$20
Join us for our 4th Annual Fitness Expo On Tap event! With various local fitness-related vendors, a free fun run 5k, free yoga, a Beer Mile Run, plus food trucks and LIVE MUSIC....  There's...
5K
7
JUN
28

Littleton, CO
• 43.5 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

Arvada, CO
• 47.8 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
• 47.0 miles
$43 -$55
Please visit our official race website at www.runtochangelives.org for more registration options.
1K 5K Half Marathon
JUL
4

Boulder, CO
• 51.2 miles
$40 -$45
Join us for the 17th edition of the Avery Brewing Company 4K on the 4th, which is one of Boulder’s best running traditions to do on the 4th of July! July 4th is celebrated in a number of...
4K
5
JUL
4

Fort Collins, CO
• 63.0 miles
$10 -$55
Friday July 4th, 2026 Walk ⭐️ Jog ⭐️ Run ⭐️ Race Kick off your holiday festivities with a 5k in City Park, Fort Collins Start your Fourth of July with movement, community, and celebration at the...
5K
35
JUL
4

Greeley, CO
• 45.1 miles
$35 -$45
Celebrate the Fourth of July with run.Windsor in Greeley, Colorado as we bring back the annual July 4th Freedom 5k walk and run, along the Greeley Stampede 4th of July Parade Route! Participants...
5K
70
JUL
4

Littleton, CO
• 44.8 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
• 50.0 miles
$30 -$35
Join us for the Independence Day 5K in Buena Vista, CO on July 4th, 2025!  
3K 5K
13