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5k Runs Found In Colorado in October

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5k Runs in Colorado in October 2025

Find A Race is the US's favourite event listings site. Check out our list of October 2025 5k Runs in Colorado below.

Race Calendar: 5k Runs Found In October

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Race to Cure Sarcoma Denver

Denver, Colorado
25 Oct 25
$10.00 - $35.00
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Layafette Music Fest Half-Marathon/10K/5K

Louisville, Colorado
05 Oct 25
$32.80 - $105.94
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Rim to Rim Royal Gorge Races: 5K Road Run, Trail 8 Mile, Trail Half Marathon

Canon City, Colorado
20 Sep 25 - 07 Dec 25
Free - $186.50

Runway 5K - Run for the Angels

Broomfield, Colorado
27 Sep 25 - 04 Oct 25
$27.75 - $43.65

Flyin' Ryan Memorial 5k

Greeley, Colorado
03 Oct 25
$22.20

Cheers to Oktoberfest Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
04 Oct 25
$32.80 - $52.94

Run for Donuts 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
04 Oct 25
$32.80 - $52.94

Rainbow Trail Lutheran Camp's 19th Annual Grace Race 5k

Denver, Colorado
04 Oct 25
$40.00

Paws In The Park

Longmont, Colorado
04 Oct 25
$33.50

I Can 5k

Thornton, Colorado
04 Oct 25
Free

Not So Flatt Breast Cancer Awareness Run/Walk – 5K & 10K in Denver, CO

Westminster, Colorado
04 Oct 25
$10.00 - $40.00

Colorado Springs Marathon, Half, 5K, and Kids K

Colorado Springs, Colorado
04 Oct 25 - 05 Oct 25
Free - $535.35

PRA Miner Gold Rush

Broomfield, Colorado
04 Oct 25
$15.00 - $40.00

Big Waves Family 5K run/walk Presented by Brumate

Westminster, Colorado
04 Oct 25
$44.00

Layafette Music Fest Half-Marathon/10K/5K

Louisville, Colorado
05 Oct 25
$32.80 - $105.94

RMRR October Trophy Series

Aurora, Colorado
05 Oct 25
$11.60

Strides for Sierra 5K run/walk

Arvada, Colorado
05 Oct 25
$11.60 - $107.00

Liberty Energy 5K - Benefiting the Bettering Human Lives Foundation

Denver, Colorado
05 Oct 25
Free - $38.35

Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run

Windsor, Colorado
05 Oct 25
$20.00 - $135.00

ASDAsh 5k

Aurora, Colorado
11 Oct 25
$30.00

Manitou 5K

Manitou Springs, Colorado
11 Oct 25
$27.50 - $43.40

Boulder XC Series Meet 1

Boulder, Colorado
11 Oct 25
$12.18 - $22.85

The Long View Marathon

Fort Collins, Colorado
11 Oct 25
$38.10 - $117.60

Kipling Villas 5K - 2025

Littleton, Colorado
11 Oct 25
$15.00

Suffer Better 9th Annual Fall Trail Runs

Pine, Colorado
11 Oct 25
$27.50 - $117.60

Gummball 5K

Brighton, Colorado
11 Oct 25
$33.05

Rubey Rescue Run

Aspen, Colorado
11 Oct 25
$65.00

Saint's Corp Pilgrimage Fun Run

Pagosa Springs, Colorado
11 Oct 25
$35.00

Joy & Justice 5k

Timnath, Colorado
12 Oct 25
$16.90 - $43.40

Westy Half & 5k

Westminster, Colorado
12 Oct 25
$45.00 - $70.00

Run Against Breast Cancer 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
18 Oct 25
$32.80 - $52.94

International Sloth Day Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
18 Oct 25
$32.80 - $52.94

Mancos Cowboy Half Marathon, 5K, and Fun Run

Mancos, Colorado
18 Oct 25
Free - $69.90

Homecoming 5k - Colorado State University

Fort Collins, Colorado
18 Oct 25
$28.38 - $44.35

Expo Park XC Runs

Aurora, Colorado
19 Oct 25
$26.44 - $27.50

DU Crimson Classic 5K Run/1.5 Mile Walk

Denver, Colorado
22 Oct 25
Free

Halloween Fun Run 5k & 1mile - Zombie Theme

Idaho Springs, Colorado
25 Oct 25
$22.20

Grand Valley Brew Runs

Grand Junction, Colorado
25 Oct 25 - 20 Dec 25
$38.10

YMCA of Pueblo Spooky Sprint 5K

Pueblo, Colorado
25 Oct 25
$43.40

Apex Foundation Trick or Trot 5K & Halloween Hunt presented by Intermountain Health

Arvada, Colorado
25 Oct 25
$8.00 - $35.00

Race to Cure Sarcoma Denver

Denver, Colorado
25 Oct 25
$10.00 - $35.00

Foundry Halloween 5k

Steamboat Springs, Colorado
25 Oct 25
$27.75
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