Found 201 races near Colorado

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OCT
10

Grand Junction, CO
• 19.7 miles
$20 -$40
The Dialysis Dash 5K & Kidney Health Expo is a fun, family-friendly race dedicated to raising awareness about kidney disease and supporting local dialysis patients. Proceeds will benefit DCI...
5K
26
OCT
10

Breckenridge, CO
• 41.9 miles
$25 -$150
Join us for an unforgettable two-day running experience in the heart of Breckenridge!Our Breckenridge RunFest kicks off Saturday with a 5K and 10K along Main Street, followed by the Half Marathon...
5K 10K Half Marathon Marathon
22
OCT
10

Pine, CO
• 1072.3 miles
$25 -$110
We are stoked to once again invite you all to come run with us at Staunton State Park, off of Highway 285 near Conifer, CO, on October 10, 2026.  We are even more stoked to again offer our...
5K 25K 50K
2
OCT
10

Windsor, CO
• 127.1 miles
$25 -$50
Packet Pick Up and Same Day Registration: 7:00am-7:45am on October 10th at Boardwalk Park in Windsor. 5k Run Starts at 8am! Come run, walk, and skip around the beautiful Windsor Lake!  Not into a...
5K
1
OCT
11

Westminster, CO
• 41.6 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
88
OCT
11

Fort Collins, CO
• 132.2 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
2
OCT
17

Denver, CO
• 78.8 miles
$30
Participants joining our inaugural annual 5K and Family Run/Walk will help bring awareness for clean, sustainable water solutions to communities in need and support our disaster response...
5K
2
OCT
17

Sedalia, CO
• 60.2 miles
$50 -$170
The Human Potential Running Series PresentsThe Indian Creek Trail Runs @ Indian Creek Campground The Indian Creek Trail Runs is the oldest official race of HPRS and is also known as our annual...
55K
5
OCT
18

Glenwood Springs, CO
• 63.7 miles
$30 -$40
Lace up your sneakers and put on your best costume—it’s time for the 3rd Annual Halloween Hustle For Charity, a family-friendly charity race that brings together a community of athletes, costumed...
1K 5K
6
OCT
18

Palmer Lake, CO
• 46.3 miles
$15 -$45
Colorado’s Shortest (and Most Legendary) Run is Back!     Mark your calendars: Sunday, October 18th, 2026, for the 12th Annual PALMER LAKE .5K — yes, that’s Point Five K — brought to you by Awake...
5K
4
OCT
24

Arvada, CO
• 80.1 miles
$10 -$55
Voted Best of the Best in Arvada for Non Profit Events by Colorado Community Media! Join the Apex Foundation for the 6th Anniversary Trick or Trot 5K, presented by Intermountain Health! Runners...
5K
17
OCT
24

Mancos, CO
• 42.7 miles
$25 -$85
Mancos Cowboy Half Marathon, 5K Race, and Kids' Fun Run Race Date:  Saturday, October 24, 2026 The Mancos Cowboy Half Marathon and 5K Race is a beautiful and scenic course with a mix of pavement,...
5K Half Marathon
9
OCT
25

Denver, CO
• 78.9 miles
$30 -$50
The Ghosts & Goblins 5K/10K is a family, friendly event to celebrate the upcoming holiday season. Start your holiday traditions with a fun morning of fitness and friends by joining us at Denver’s...
5K 10K
53
OCT
25

Denver, CO
• 79.1 miles
The Odyssey Odyssey Fun Run is entering its 14th year. It has always been centered around having fun and exercising our bodies.  It is an all-inclusive event, which is why all the races are FREE...
1m 5K
80
OCT
31

Thornton, CO
• 87.3 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
15
OCT
31

Idaho Springs, CO
• 40.8 miles
$20
🎃 Halloween Fun Run – 5K & 1 Mile (Zombie Theme)Saturday, October 25, 2025 • 10 AM – 12 PM320 Chicago Creek Rd, Idaho Springs, CO Whether you shuffle like the undead, sprint like you're being...
1m 5K
12
OCT
31

Grand Junction, CO
• 17.3 miles
This is a community fun event. Put on by Pear Park Elementary School. All proceeds will help fund outdoor programs at the school as well as help the Phyisical Education program.Event details and...
5K
7
NOV
1

Denver, CO
• 77.7 miles
$10 -$15
Rocky Mountain Road Runners holds a monthly Trophy Series in the Denver area.  We provide a low-key, low-cost racing environment. Everyone is welcome to run with us! The 15km race uses a handicap...
5K 15K
39
NOV
1

Denver, CO
• 79.2 miles
$10 -$45
Join us for the Feet for Justice Run IN-PERSON or VIRTUALLY this November! The Feet for Justice Run is a family-friendly event in Denver that brings together the community members, businesses,...
5K 10K
8
NOV
7

Denver, CO
• 78.7 miles
$20 -$75
Get ready for the winter season while enjoying a race with your friends at the City Park Classic!    5k/10k finishers earn a MEDAL!   November is Worldwide Pancreatic Cancer Awareness month -...
1m 5K 10K
44