Trail

Fast

BQ

Search Radius50 mi100 mi50

Upcoming Races Near Brighton, CO in October, 2025

Featured Races Get Seen

Be the first race runners see — and grow your registrations. Put your race at the top.

Feature Your Race
Learn how to feature your race
Flyin' Ryan Memorial 5k logo

Flyin' Ryan Memorial 5k

Greeley, CO

Friday, October 3rd, 2025

5K
View details for race Flyin' Ryan Memorial 5k
Not So Flatt Breast Cancer Awareness Run/Walk – 5K & 10K in Denver, CO logo

Not So Flatt Breast Cancer Awareness Run/Walk –...

Westminster, CO

Saturday, October 4th, 2025

5K
10K
View details for race Not So Flatt Breast Cancer Awareness Run/Walk – 5K & 10K in Denver, CO
PRA Miner Gold Rush logo

PRA Miner Gold Rush

Broomfield, CO

Saturday, October 4th, 2025

5K
1 Mile
View details for race PRA Miner Gold Rush
RunAbilities FUN Walk/Run/Roll logo

RunAbilities FUN Walk/Run/Roll

Parker, CO

Saturday, October 4th, 2025

Trail
View details for race RunAbilities FUN Walk/Run/Roll
I Can 5k logo

I Can 5k

Thornton, CO

Saturday, October 4th, 2025

5K
View details for race I Can 5k
Big Waves Family 5K run/walk Presented by Brumate logo

Big Waves Family 5K run/walk Presented by Brumate

Westminster, CO

Saturday, October 4th, 2025

5K
View details for race Big Waves Family 5K run/walk Presented by Brumate
Strides for Sierra 5K run/walk logo

Strides for Sierra 5K run/walk

Arvada, CO

Sunday, October 5th, 2025

5K
View details for race Strides for Sierra 5K run/walk
Windsor Marathon, Half Marathon, 10k & 5k logo

Windsor Marathon, Half Marathon, 10k & 5k

Windsor, CO

Sunday, October 5th, 2025

Marathon
Half
10K
Trail
View details for race Windsor Marathon, Half Marathon, 10k & 5k
Healthy Kids Running Series Fall 2025 - Denver, CO logo

Healthy Kids Running Series Fall 2025 - Denver, CO

Denver, CO

Sunday, October 5th, 2025

View details for race Healthy Kids Running Series Fall 2025 - Denver, CO
Liberty Energy 5K - Benefiting the Bettering Human Lives Foundation logo

Liberty Energy 5K - Benefiting the Bettering Hu...

Denver, CO

Sunday, October 5th, 2025

5K
View details for race Liberty Energy 5K - Benefiting the Bettering Human Lives Foundation
Layafette Music Fest Half-Marathon/10K/5K logo

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

Louisville, CO

Sunday, October 5th, 2025

5K
Half
View details for race Layafette Music Fest Half-Marathon/10K/5K
RMRR October Trophy Series logo

RMRR October Trophy Series

Aurora, CO

Sunday, October 5th, 2025

5K
Fast
View details for race RMRR October Trophy Series
The Long View Marathon logo

The Long View Marathon

Fort Collins, CO

Saturday, October 11th, 2025

Marathon
Half
5K
View details for race The Long View Marathon
Kipling Villas 5K - 2024 logo

Kipling Villas 5K - 2024

Littleton, CO

Saturday, October 11th, 2025

5K
View details for race Kipling Villas 5K - 2024
Gummball 5K logo

Gummball 5K

Brighton, CO

Saturday, October 11th, 2025

5K
View details for race Gummball 5K
Suffer Better 9th Annual Fall Trail Runs logo

Suffer Better 9th Annual Fall Trail Runs

Pine, CO

Saturday, October 11th, 2025

Ultra
Trail
View details for race Suffer Better 9th Annual Fall Trail Runs
Boulder XC Series Meet 1 logo

Boulder XC Series Meet 1

Boulder, CO

Saturday, October 11th, 2025

5K
View details for race Boulder XC Series Meet 1
The bRUNch Run™ - logo

The bRUNch Run™ -

Denver, CO

Sunday, October 12th, 2025

10K
5K
15K
View details for race The bRUNch Run™ -
Westy Half & 5k logo

Westy Half & 5k

Westminster, CO

Sunday, October 12th, 2025

Half
5K
View details for race Westy Half & 5k
Joy & Justice 5k logo

Joy & Justice 5k

Timnath, CO

Sunday, October 12th, 2025

5K
1 Mile
View details for race Joy & Justice 5k
2025 DU Crimson Classic 5K Run/1.5 Mile Walk logo

2025 DU Crimson Classic 5K Run/1.5 Mile Walk

Denver, CO

Tuesday, October 14th, 2025

5K
View details for race 2025 DU Crimson Classic 5K Run/1.5 Mile Walk
Boulder Turkey Trot Training Program logo

Boulder Turkey Trot Training Program

Boulder, CO

Wednesday, October 15th, 2025

View details for race Boulder Turkey Trot Training Program
Blue Sky Trail Marathon & Half Marathon logo

Blue Sky Trail Marathon & Half Marathon

Fort Collins, CO

Saturday, October 18th, 2025

Trail
View details for race Blue Sky Trail Marathon & Half Marathon
Blue Sky Marathon & Half logo

Blue Sky Marathon & Half

Fort Collins, CO

Saturday, October 18th, 2025

Half
Marathon
View details for race Blue Sky Marathon & Half
Homecoming 5k - Colorado State University logo

Homecoming 5k - Colorado State University

Fort Collins, CO

Saturday, October 18th, 2025

5K
View details for race Homecoming 5k - Colorado State University
The Great Trailhead Foot Race 5 Miler logo

The Great Trailhead Foot Race 5 Miler

Lakewood, CO

Saturday, October 18th, 2025

10 Miles
View details for race The Great Trailhead Foot Race 5 Miler
Expo Park XC Runs logo

Expo Park XC Runs

Aurora, CO

Sunday, October 19th, 2025

5K
View details for race Expo Park XC Runs
DU Crimson Classic 5K Run/1.5 Mile Walk logo

DU Crimson Classic 5K Run/1.5 Mile Walk

Denver, CO

Wednesday, October 22nd, 2025

5K
1 Mile
View details for race DU Crimson Classic 5K Run/1.5 Mile Walk
Race to Cure Sarcoma Denver logo

Race to Cure Sarcoma Denver

Denver, CO

Saturday, October 25th, 2025

5K
View details for race Race to Cure Sarcoma Denver
Halloween Fun Run 5k & 1mile - Zombie Theme logo

Halloween Fun Run 5k & 1mile - Zombie Theme

Idaho Springs, CO

Saturday, October 25th, 2025

5K
1 Mile
View details for race Halloween Fun Run 5k & 1mile - Zombie Theme
Apex Foundation Trick or Trot 5K & Halloween Hunt presented by Intermountain Health logo

Apex Foundation Trick or Trot 5K & Halloween Hu...

Arvada, CO

Saturday, October 25th, 2025

5K
1 Mile
View details for race Apex Foundation Trick or Trot 5K & Halloween Hunt presented by Intermountain Health
2025 Eerie Erie logo

2025 Eerie Erie

Erie, CO

Saturday, October 25th, 2025

5K
10K
Trail
View details for race 2025 Eerie Erie
2025 Redrum Fun Run logo

2025 Redrum Fun Run

Greeley, CO

Saturday, October 25th, 2025

View details for race 2025 Redrum Fun Run
The 13th Annual Odyssey Odyssey - 2025 logo

The 13th Annual Odyssey Odyssey - 2025

Denver, CO

Sunday, October 26th, 2025

5K
1 Mile
View details for race The 13th Annual Odyssey Odyssey - 2025
Ghosts and Goblins 5K/10K logo

Ghosts and Goblins 5K/10K

Denver, CO

Sunday, October 26th, 2025

5K
View details for race Ghosts and Goblins 5K/10K
Narrowleaf Lake Run & Pumpkin Run logo

Narrowleaf Lake Run & Pumpkin Run

Loveland, CO

Sunday, October 26th, 2025

1 Mile
10K
15K
View details for race Narrowleaf Lake Run & Pumpkin Run

Explore more in Brighton, CO

Distances:

5K10KHalf MarathonMarathon

Months:

AugustSeptemberOctober

Tags:

TrailBoston QualifiersFast Courses

State:

All Colorado races

Don't see your race? Add it!

Add Your Race (Free)
Privacy PolicyTerms of ServiceContactAdd Your Race

© 2025 Find The Run. All rights reserved.