Found 34 races

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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
27

Ridgway, CO
• 34.1 miles
$25
About the Event This event highlights everything there is to love about the Ridgway area.  The 10-mile race is run on a lollipop course with magnificent views of the San Juan Mountains.  The...
7
JUL
2

Durango, CO
• 56.7 miles
$30 -$75
Three-race Durango summer trail series partnered with local breweries; July 2 kickoff at Horse Gulch.
16
JUL
4

Telluride, CO
• 101.8 miles
$60
Uphill July 4th trail race in Telluride, CO for the Good Neighbor Fund.
19
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

Bayfield, CO
• 61.0 miles
$20 -$25
Join us for our 19th annual Bayfield 4th of July tradition! Bring the whole family to run or walk and start your 4th with some happy exercise before the parade! 100% of registration fees go to...
2K 5K
2
JUL
4

Ouray, CO
• 42.6 miles
$25 -$45
A scenic 10K fun run starting and ending at the Ouray Community Center, benefiting affordable housing.
10K
30
JUL
4

Grand Junction, CO
• 46.9 miles
$10 -$35
First annual July 4th 5K at Las Colonias benefiting the Central High School Warrior Marching Band.
5K
34
JUL
11

Crested Butte, CO
• 76.6 miles
$90 -$110
Historic race trail featuring competitive racing and community celebration
15K 25K
82
JUL
18

Aspen, CO
• 95.2 miles
$115 -$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
53
JUL
25

Aspen, CO
• 95.2 miles
$80 -$260
http://www.aspenvalleymarathon.com
Half Marathon Marathon
49
JUL
27

Telluride, CO
• 102.0 miles
Banished by the ferocious tiger, Shere Khan, a human boy named Mowgli and his panther friend, Bagheera, are on the run in the deepest parts of the jungle. On their journey, the two meet a...
33
AUG
1

Dolores, CO
• 68.9 miles
Mountain bike race on the Boggy Draw singletrack near Dolores, CO, with 33, 18, and 15-mile courses for charity.
3m 15m 18m 33m
14
AUG
8

Dolores, CO
• 68.9 miles
$30 -$40
The fifth annual Escalante Days 5K Run will be held on Saturday August 9, 2025 at Flanders Park in Dolores. All proceeds support the Dolores Middle and High School Cross Country programs. Start...
5K
7
AUG
15

Montrose, CO
• 22.1 miles
$40 -$50
Join us for the annual Colorado West Christian School 5K Color Fun Run—a fun, family-friendly race along the scenic river trail at Riverbottom Park in Montrose, Colorado. Run or walk through...
5K
6
AUG
23

Ridgway, CO
• 29.8 miles
$40 -$45
Scenic 5K & 10K fun run/walk on paved roads in Ridgway, CO funding local scholarships.
5K 10K
26
AUG
29

Durango, CO
• 83.9 miles
$99 -$149
Half marathon road with challenging terrain and post-race festivities
Half Marathon
91
SEP
12

Telluride, CO
• 42.5 miles
$130 -$175
53rd Annual Imogene Pass Run, a difficult mountain race for well-prepared athletes, Sept 12, 2026.
46
SEP
12

Grand Junction, CO
• 49.8 miles
$10 -$45
Spirit in Grand Junction, CO - t-shirt, run or walk
1K 3m 5K
115
SEP
12

Loma, CO
• 68.0 miles
$50
A fresh take on trail running that ditches the big-budget hype for pure, no frills adventure. Forget the lottery entries, $200+ fees, swag bags, and finish line blow up arches. This is trail...
18