Found 99 races near Weld County, CO

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SEP
19

Brighton, CO
• 48.4 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

Wellington, CO
• 29.0 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
18
SEP
20

Cheyenne, WY
• 43.7 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
26

Broomfield, CO
• 56.5 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
• 25.3 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
• 45.2 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
17
OCT
3

Westminster, CO
• 49.2 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
• 31.4 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
OCT
3

Thornton, CO
• 54.8 miles
You CAN 5k.  This event is for EVERY ONE.  EVERY BODY.  You won't get lost.  You won't get forgotten.  You'll run (or jog or walk or crawl) a clearly marked 5k course with friendly volunteers...
5K
29
OCT
3

Lafayette, CO
• 51.9 miles
$45 -$75
Lafayette Music Fest is put on by Rock for the People, a 501(c)(3) nonprofit organization in Lafayette, CO with the mission of building an inclusive live music community by offering free and...
5K 10K
8
OCT
3

Broomfield, CO
• 48.4 miles
$15 -$55
Prospect Ridge Academy is thrilled to present our 16th Annual Miner Gold Rush and Fall Festival! All proceeds will benefit Prospect Ridge Academy, a public charter school providing a rigorous,...
1m 5K
6
OCT
3

Loveland, Colorado
• 33.1 miles
Experience the ultimate Colorado adventure at Boyd Lake State Park! This event pairs you and your dog for a scenic run filled with fun, beginner-friendly obstacles. It’s all about local vibes,...
2m
1
15
OCT
10

Fort Collins, CO
• 29.6 miles
$35 -$120
Join us on a journey from Fort Collins to Loveland. The marathon begins at Edora Park in Fort Collins and ends at Fairgrounds Park in Loveland. The half-marathon starts at Fossil Creek Park and...
5K Half Marathon Marathon
52
OCT
11

Fort Collins, CO
• 31.7 miles
This fun run is held on national coming out day this out and back Greenway 5K is here to celebrate everyone and anyone! There will be an unofficial clock and a mini award ceremony after. this is...
5K
OCT
11

Westminster, CO
• 55.8 miles
$45 -$85
Join the WESTY HALF and 5k this fall! The Hometown Race Series features half marathons and 5k distance events in outlying communities outside the Denver and Boulder metro areas.  Whatever...
5K Half Marathon
86
OCT
17

Fort Collins, CO
• 33.8 miles
$100 -$130
Welcome to the Blue Sky Trail Marathon & Half, Fort Collins's original and only trail marathon. Taking place on the trails between Horsetooth Mountain Park and the Devil's Backbone Open Space,...
Half Marathon Marathon
OCT
31

Thornton, CO
• 53.1 miles
$40 -$60
Dress up and run spooky and silly at the I Ain't Scared (of 5k) in Thornton!  Fun music, Halloween snacks and costumes galore!!  This event only comes around once every few years when Halloween...
0m 5K
14
OCT
31

Loveland CO
• 33.1 miles
Brisk autumn running in Colorado – OH YEA! Join us for a family fun event with FIVE distance options at the beautiful Boyd Lake State Park venue. Choose your adventure! Heavy 5K, 10K, 15K (4, 7...
1m 4m 7m 10m
18
NOV
7

Loveland, CO
• 33.6 miles
$20 -$30
Our community is the only city in the nation to follow the old tradition of ringing bells throughout the town in the early morning hours of Veteran’s Day. This race will mimic some of those old...
2m
31
NOV
7

Fort Collins, CO
• 26.9 miles
$105 -$275
Welcome to the Colorado 24 Hour Run! We aim to provide a fun, welcoming race experience that allows everyone to find a challenge, no matter where you’re at on your running journey. Want to see...
34