Found 68 races near Summit County, CO

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JUN
4

Louisville, CO
• 2.5 miles
A 5K for our school, our kids, and our community. Join us for the Red Schoolhouse Run — a fundraiser 5K benefiting Jefferson Street School! From stroller-pushers to seasoned runners, this race is...
12
JUN
6

Anywhere, CO
• 33.1 miles
$27 -$40
Let's get walking or running or riding starting 6/6/26-6/14/26 to raise awareness and funds for 22q.  This virtual event will kick-off on Saturday, June 6 in your community, on your treadmill, or...
5K 10m Half Marathon 20m Marathon
21
JUN
6

Granby, CO
• 49.7 miles
The Human Potential Running Series Presents: The Summits Trail Runs @ Granby Ranch Resort The Summits Trail Runs occu...
Half Marathon Marathon 50K
86
JUN
7

Louisville, CO
• 54.6 miles
The Colorado 13er is a unique race combining trail and road running on a scenic 13.1-mile loop course in Louisville. It is well-supported and accessible for runners of all levels, offering a mix...
5K 10K Half Marathon
43
JUN
10

Idaho Springs, CO
• 23.2 miles
Run the Mighty ARGO hill this summer in a 4 race series! This is a grass(gold)roots, backyard style event. Meet at 5pm in the park across from the Argo to pick up your wristband. Race starts at...
13
JUN
11

Boulder, CO
• 5.8 miles
$15 -$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...
1m
16
JUN
13

Arvada, CO
• 51.8 miles
$40 -$85
Join us for our 14th annual Summer Breeze, benefiting the Food Bank of the Rockies! This event features 5K, 10K, and Half Marathon courses that meander along the Van Bibber Creek Trail, offering...
5K 10K Half Marathon
526
JUN
20

Kremmling, CO
• 35.5 miles
$10 -$30
Come join us for the 2026 Mustang Mile  The 2026 Mustang Mile is a timed Run/ Walk in Kremmling, Colorado. This event will kick off the Kremmling Days Parade with a route through Main Street....
16
JUN
21

Boulder, CO
• 18.1 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
• 9.0 miles
$10 -$60
1 Mile in Arvada. Join runners of all abilities
1m 5K 10K 10m
124
JUN
21

Boulder, CO
• 18.1 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
• 53.1 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
• 55.6 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
• 30.7 miles
$10 -$155
At Town Park finisher beer, trail, scenic, family-friendly
6m 10K 13m Half Marathon 26m 40m
73
JUN
26

Bailey, CO
• 52.2 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
• 37.5 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
• 37.5 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

Arvada, CO
• 49.8 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
9
JUN
27

Boulder, CO
• 51.9 miles
$20 -$45
Join us for the 29th running of the Downtown Boulder Pearl Street Mile on Saturday June 27th, all taking place on the Pearl Street Mall. It is a massive night of 1-Mile races on our criterium...
13
JUN
27

Georgetown, CO
• 30.4 miles
$35 -$150
$55.55 New Year’s Eve Pricing The gnome picked the number.New beginnings, big changes, zero regrets.   Hey Beautiful Slackers!   The 2026 Slacker Races will be held on June 27  Start Time...
4m Half Marathon
42