Found 55 races

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JUL
18

Steamboat Springs, CO
• 101.0 miles
$35 -$55
9.5 Mile and 5K trail run in the Steamboat Springs Running Series, northern Colorado mountains.
5K 9m
35
JUL
19

Greeley, CO
• 46.3 miles
$25 -$40
Veteran suicide awareness 5k and 1 mile run benefiting NCVRC, with medal, shirt, and after party.
1m 5K
32
JUL
24

Loveland, CO
• 55.7 miles
$25
Loveland, CO memorial 5K honoring Ryan Vomacka, supporting Mountain View High School running programs.
5K
24
AUG
1

Craig, CO
• 123.1 miles
$30
Kick off an unforgettable weekend at the Moffat County Hot Air Balloon Festival with our vibrant, can’t-miss Flying Colors 5K Fun Run/Walk!  Join us at Loudy Simpson Park for a lively stroll or...
1m 5K
45
AUG
4

Fort Collins, CO
• 25.0 miles
$30
Flat and fast 5K trail race at Lory State Park, part of the Lory Summer Trail Series.
5K
32
AUG
7

Fort Collins, CO
• 19.8 miles
$32 -$110
Mountain Avenue Mile and Human Race Half Marathon, 10K, and 5K at Civic Center Park.
5K 10K Half Marathon
35
AUG
8

Berthoud, CO
• 53.3 miles
$5 -$60
Inaugural Berthoud Gastro Dash 10K. Run Fast. Eat Faster.
10K
48
AUG
11

Bellvue, CO
• 82.0 miles
$30
Join us August 4, 11, 18 & 25 for a fun series of shorter midweek trail races. This fourth race of the series will take place on the fast and flat Valley Trail at Lory State Park. Our goal is to...
5K 10K 12K
31
AUG
15

Greeley, CO
• 47.9 miles
$25
The Frontier Academy Community 5K is meant to serve the community of Greeley and the surrounding area. Through this race we hope to fulfill the vision and mission of our school - 'Building...
5K
18
AUG
18

Bellvue, CO
• 82.0 miles
$30
Hilly midweek 5k trail race at Lory State Park in the Lory Summer Trail Series.
5K
37
AUG
25

Bellvue, CO
• 82.0 miles
$30
Join us August 4, 11, 18 & 25 for a fun series of shorter midweek trail races. This fourth race of the series will take place on the fast and flat Valley Trail at Lory State Park. Our goal is to...
12K
37
AUG
29

Steamboat Springs, CO
• 99.3 miles
Trail run in the northern Colorado mountains with 50k, 16 Mile, and 5 Mile options.
5m 16m 50K
33
SEP
7

Loveland, CO
• 97.3 miles
$65
See the Northern Colorado All-Ability communities come together in faith and sports through FCA All-Abilities. We are running for: Awareness of sports programs for all ages for individuals with...
5K
13
SEP
7

Loveland, CO
• 96.5 miles
$10 -$65
Join us for the Labor Day 5kSee the Northern Colorado All-Ability communities come together in faith and sports through FCA All-Abilities. We are running for: Uniting All-Abilities through faith...
5K
25
SEP
7

Oak Creek, CO
• 116.5 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
10

Greeley, CO
• 105.7 miles
$15 -$45
✨🦸 Welcome to the 14th Annual Superhero Run! 🦸✨ This isn’t just a race - it’s a chance to make an impact by stepping up for others. On Saturday, September 19, 2026, we’ll be back at Greeley’s...
1m 5K 10K
35
SEP
12

Bellvue, CO
• 5.4 miles
$110 -$125
13.5-mile trail half marathon in Lory State Park near Fort Collins, CO with ~2,000' of climbing.
Half Marathon
39
SEP
12

Greeley, CO
• 104.2 miles
$35 -$45
Join us for the For the City Network 5K, a community run/walk dedicated to strengthening neighborhoods, supporting families, and creating positive change across Weld County. This event is open to...
5K
28
SEP
12

Loveland, CO
• 99.4 miles
$5 -$15
Come join us for a 1-mile fun run, as we kick off the Wild Wonderful Saturday events. Plan to stay and check out the Wild Zone. Welcome adventurers, explorers, and vine-swinging daredevils! You...
16
SEP
13

Loveland, CO
• 99.1 miles
$15 -$30
Are you ready to challenge yourself? We will have a 1-mile loop open for 1 ½ hrs. Who can run the most loops in 1 ½ hrs? Who can run the fastest? We will have awards for different categories....
46