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SEP
10

Greeley, CO
• 62.5 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
8
SEP
12

Bellvue, CO
• 55.1 miles
$110 -$125
The Black Squirrel Half Marathon will take place on the wonderful trails of Lory State Park to the northeast of Fort Collins, Colorado. The half marathon course offers a tour of the outer...
Half Marathon
29
SEP
12

Greeley, CO
• 63.4 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
20
SEP
12

Loveland, CO
• 65.5 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...
4
SEP
13

Loveland, CO
• 68.4 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....
23
SEP
18

Severance, CO
• 57.3 miles
$35 -$45
Unique nighttime glow-themed 5K run/walk in Severance, CO during Severance Days festival. Professionally timed with DJ entertainment and post-race party.
5K
269
SEP
19

Westminster, CO
• 102.3 miles
$25 -$85
One of Colorado's favorite trails meets one of its most glorious parks at our 9th annual Fallfest! As courses wind southwest along Big Dry Creek Trail, the remarkable sight of Standley Lake with...
5K 10K Half Marathon
305
SEP
19

Buena Vista, CO
• 93.1 miles
$30 -$100
Annual run in Buena Vista with supportive community atmosphere and race day excitement
5K 10K Half Marathon
264
SEP
19

Brighton, CO
• 97.2 miles
$30
9th Annual GUMMBALL 5K - In Honor of Fallen Deputy Heath Gumm The Gummball 5K will be run in honor of our fallen brother, Deputy Heath Gumm. He paid the ultimate sacrifice on January 24, 2018. ...
5K
1
SEP
19

Red Feather Lakes, CO
• 60.3 miles
$35
The Tavern at Red Feather Lakes is planning this year's Oktoberfest on Saturday, September 19th. As a part of the festivities, Caring Hearts of Red Feather Lakes Foundation is putting on our...
12
SEP
19

Wellington, CO
• 46.5 miles
$15 -$65
Wellington STAR Foundation 5K & 10K @ Centennial ParkEnjoy warm late-summer sunshine as you run through the welcoming streets of Wellington, Colorado. With wide-open views, small-town charm, and...
5K 10K
17
SEP
20

Cheyenne, WY
• 12.2 miles
$30
Grab your leash, lace up your running shoes, and join us May 16, 2026, for the Dog Jog 5K, a tail-wagging, dog-friendly race to support the Cheyenne Animal Shelter! Whether you’re a seasoned...
5K
58
SEP
23

Winter Park, CO
• 115.0 miles
$150 -$400
CG Adventure Trip – Mountain ExperienceThis event is a guided CG adventure weekend designed to combine structured training, accountability, community, and an elevated mountain experience....
14
SEP
26

Gering, NE
• 61.2 miles
$45 -$120
Welcome to the most beautiful race in Nebraska! Runners from all over the country have described us as the friendliest, most supportive, and best organized race they have participated in. We...
5K Half Marathon Marathon
9
SEP
26

Estes Park, CO
• 79.1 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
39
SEP
26

Broomfield, CO
• 101.0 miles
$25 -$40
RUNWAY 5K: In-Person (Broomfield, CO) and Virtual (Anywhere)! A Benefit Run/Walk for Angel Flight West Join Us to Run for a Cause That Matters! Funds raised will support Angel Flight West and...
5K
12
SEP
27

Timnath, CO
• 57.2 miles
$15 -$40
Join us for the Race for Joy & Justice 5K, a family-friendly run/walk event benefiting the Joy & Justice organization based in Timnath, Colorado. This exciting event brings together people of all...
1m 5K
26
SEP
27

Boulder, CO
• 96.0 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
17
OCT
3

Westminster, CO
• 95.6 miles
$40 -$48
Hi Friends of Big Waves! We are looking forward to having everyone back for our family 5k this year! Please reach out if you have any questions that you don't see the answers for here. My email...
5K
10
OCT
3

Fort Collins, CO
• 56.1 miles
$25 -$50
Saturday, October 3rd at 8:00 am Join fellow Rams and CSU friends for the 46th annual Homecoming 5K! The race is a great way for community, alumni, and students to come together for fun, fitness,...
5K
13