Found 32 races near Grand County, CO

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JUL
18

Steamboat Springs, CO
• 75.5 miles
$35 -$55
9.5 Mile and 5K trail run in the Steamboat Springs Running Series, northern Colorado mountains.
5K 9m
35
JUL
23

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

Pine, CO
• 35.8 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
6

Boulder, CO
• 6.6 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
22

Evergreen, CO
• 35.5 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
• 37.1 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

Pine, CO
• 45.0 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

Steamboat Springs, CO
• 42.9 miles
Trail run in the northern Colorado mountains with 50k, 16 Mile, and 5 Mile options.
5m 16m 50K
33
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
• 15.0 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
SEP
19

Buena Vista, CO
• 62.3 miles
$35 -$100
Annual run in Buena Vista with supportive community atmosphere and race day excitement
5K 10K Half Marathon
287
SEP
19

Red Feather Lakes, CO
• 35.1 miles
$35
Oktoberfest fun run at The Tavern at Red Feather Lakes, Colorado.
20
SEP
23

Winter Park, CO
• 35.2 miles
$150 -$400
Vertical endurance race climbing the elevation of Mt. Everest in Winter Park, CO.
25
SEP
26

Estes Park, CO
• 41.7 miles
$90 -$265
​Join us for the Estes Epic on September 26-27, 2026 —a premier event featuring a 50k Bike Race, 50k Run, and Heavy Half Marathon. After a six-year hiatus, this challenging race returns, offering...
Half Marathon 50K
55
SEP
26

Oak Creek, CO
• 63.5 miles
$20 -$25
A flat 5K fun run overlooking Stagecoach State Park Reservoir with flapjack breakfast.
5K
15
SEP
27

Boulder, CO
• 60.2 miles
$40 -$500
This is a virtual race open to supporters across the country who want to take action for children and families. Participants can run, walk, or move in their own community while supporting a...
5K 10K Half Marathon
36