Found 27 races

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JUN
27

Glenwood Springs, CO
• 63.9 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
• 59.8 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
4

Telluride, CO
• 72.4 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

Ouray, CO
• 69.5 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
• 19.6 miles
$10 -$35
First annual July 4th 5K at Las Colonias benefiting the Central High School Warrior Marching Band.
5K
34
JUL
4

Meeker, CO
• 78.0 miles
$20 -$30
Kick off the 4th of July with a family-friendly and festive 5K.  This fun run/walk is perfect for first-time 5K participants, elite runners, kids, parents with strollers, and everyone in...
5K
24
JUL
11

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

Aspen, CO
• 77.1 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
• 77.1 miles
$80 -$260
http://www.aspenvalleymarathon.com
Half Marathon Marathon
49
JUL
27

Telluride, CO
• 72.2 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
15

Montrose, CO
• 37.2 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
• 55.4 miles
$40 -$45
Scenic 5K & 10K fun run/walk on paved roads in Ridgway, CO funding local scholarships.
5K 10K
26
SEP
7

Oak Creek, CO
• 114.4 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
42
SEP
12

Telluride, CO
• 69.5 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
• 20.9 miles
$10 -$45
Spirit in Grand Junction, CO - t-shirt, run or walk
1K 3m 5K
115
SEP
12

Loma, CO
• 39.6 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
SEP
26

Fruita, CO
• 31.5 miles
$25 -$35
MESA COUNTY SEARCH & RESCUE 5K RACE, September 26th 2026, in conjunction with Fruita Fall Festival SUPPORT OUR MISSION TO RESCUE AND SAVE LIVES   COST: EARLY REGISTATION By SEP 6th: 13 and under:...
5K
9
SEP
26

Oak Creek, CO
• 118.2 miles
$20 -$25
A flat 5K fun run overlooking Stagecoach State Park Reservoir with flapjack breakfast.
5K
6
OCT
4

Aspen, CO
• 76.9 miles
$60 -$65
Halloween-themed dog-friendly 5.6K run/1 mile walk benefiting the Aspen Animal Shelter at Koch Park.
1m
59