Found 42 races near Summit County, CO

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JUL
18

Aspen, CO
• 43.9 miles
$125 -$145
The Audi Power of Four Trail Run offers runners a scenic mix of trails across the mountains of Aspen Snowmass. Registrants can choose between the 3 distances offered including 50K, 25K & 10K.  
10K 25K 50K
63
JUL
18

Alma, CO
• 22.3 miles
$10 -$30
Laid-back community Firefighter 5K and Doggie Dash in Alma, CO with a pancake breakfast.
5K
37
JUL
23

Boulder, CO
• 51.5 miles
$20
USATF-sanctioned all-comers summer track and field meet at CU Potts Field in Boulder, CO.
3K
21
JUL
25

Aspen, CO
• 44.1 miles
$100 -$260
http://www.aspenvalleymarathon.com
Half Marathon Marathon
59
JUL
25

Crested Butte, CO
• 21.7 miles
$50
The 27th annual community cancer-support hike at Crested Butte Mountain Resort, with full and shorter route options.
15
JUL
25

Pine, CO
• 37.1 miles
DescriptionCome run with us in amazing Staunton State Park!This race day will offer a 10 mile distance.Play fun games from our rec trailer, visit our sponsors and vendor tents while you wait for...
10m
44
AUG
1

Fairplay, CO
• 56.9 miles
$100 -$180
The Human Potential Running Series Presents: The Sheep Mountain Trail Runs @ Fairplay, CO Come ready my friends, this...
Half Marathon 50K 50m
105
AUG
6

Boulder, CO
• 51.5 miles
$20
NO Race Day Registrations 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. Held at...
1m
33
AUG
6

Eldorado Springs, CO
• 46.4 miles
$30
A scenic four-mile charity run through Eldorado Canyon benefiting the Colorado Cancer Foundation.
21
AUG
8

Arvada, CO
• 17.2 miles
$35 -$353
12th annual end-of-summer celebration on Ralston Creek Trail with Half Marathon, 10K, and 5K distances. Official BOLDERBoulder qualifier supporting veterans.
5K 10K Half Marathon
208
AUG
9

Leadville, CO
• 28.4 miles
$65 -$80
Leadville Boom Days International Pack Burro RaceHauling Ass for Over 70 Years Step back into the grit and glory of the Old West at the legendary Leadville Boom Days International Pack Burro...
23
AUG
22

Evergreen, CO
• 37.6 miles
DescriptionCome run with us in beautiful Evergreen to the top of Bergen Peak at gorgeous Elk Meadow Park!This race day will offer a Half Marathon distance. The Half Marathon will take you to the...
Half Marathon Marathon
32
AUG
22

Fraser, CO
• 46.1 miles
$65 -$85
Push your limits with these stunning, remote races in the heart of the Rocky Mountains - located just 60 miles outsid...
5K Half Marathon
104
AUG
22

Louisville, CO
• 48.6 miles
$30
The Coyote Chase 5k is a 5k race that supports the Monarch HS XC program. The race is on the Monarch HS campus and is a 2k loop that consists of grass, dirt and concrete. The grass portion of the...
5K
7
AUG
22

Pine, CO
• 37.1 miles
$110 -$130
Scenic singletrack trail marathon and half marathon in Staunton State Park, Colorado.
Half Marathon Marathon
70
AUG
24

Evergreen, CO
• 54.0 miles
DescriptionInternet Registration has not begun yet. Check Registration Dates in details.Fall 2026 JeffCo League MS Cross CountryAug 24 - Oct 14RMAE practice- Mon/Wed 3:45-4:45pm @ RMAEJeffco...
18
AUG
29

Allenspark, CO
• 59.8 miles
$20 -$55
Hello Runners and Dog Lovers! Welcome to the 14th annual Run Like The Wind 5k / 2k run in Allenspark on Labor Day weekend - Saturday, August 29th at 9am, hosted by the Old Gallery.  Register now...
2K 5K
22
SEP
5

Keystone, CO
• 44.1 miles
$80 -$90
Prizes Prizes will be distributed at the end of each race and for the overall series winners
71
SEP
5

Arvada, CO
• 49.6 miles
$25
Lace up your shoes and join us for the Demon Dash at its new course at the NAAC! We're excited to bring this course its new home and onto dirt! Whether you are a runner or walker, this will be a...
5K
30
SEP
7

Oak Creek, CO
• 66.5 miles
$25
The Running Series is excited to have the Oak Creek No Fun Run on our schedule again! Please join us in remembering long-time Running Series competitor Larry Brooks, a former organizer of the Oak...
5K
50