Upcoming Races Near Castle Rock, CO

Name: Dash & Dine 5k #2
Start: 2026-05-05
End: 2026-05-05
Location: Boulder

Chilly Cheeks Duathlon

Englewood, CO

Saturday, February 21st, 2026

Featured

Fast

View details for race Chilly Cheeks Duathlon

Want to feature your race?

Get your race seen first by thousands of runners

Learn More

Learn how to feature your race

Stories Trail Runs

Colorado Springs, CO

Saturday, February 21st, 2026

Half

View details for race Stories Trail Runs

All-Out Mardi Crawl

Arvada, CO

Sunday, February 22nd, 2026

Half

10K

Trail

View details for race All-Out Mardi Crawl

Highlands Ranch 5k

Highlands Ranch, CO

Sunday, February 22nd, 2026

View details for race Highlands Ranch 5k

Time to Paddy 5k/10k & Lucky 13.1 - Denver

Denver, CO

Saturday, February 28th, 2026

10K

Half

View details for race Time to Paddy 5k/10k & Lucky 13.1 - Denver

Time to Paddy 5k/10k & Lucky 13.1 - Denver

Westminster, CO

Saturday, February 28th, 2026

10K

Half

View details for race Time to Paddy 5k/10k & Lucky 13.1 - Denver

RMRR March Trophy Series

Littleton, CO

Sunday, March 1st, 2026

Fast

View details for race RMRR March Trophy Series

Time to Paddy 5k/10k & Lucky 13.1 - Colorado Sp...

Colorado Springs, CO

Sunday, March 1st, 2026

10K

Half

View details for race Time to Paddy 5k/10k & Lucky 13.1 - Colorado Springs

4th Anniversary Beer and Donut Hole Miles

Arvada, CO

Saturday, March 7th, 2026

1 Mile

View details for race 4th Anniversary Beer and Donut Hole Miles

Nielson Challenge

Colorado Springs, CO

Saturday, March 7th, 2026

View details for race Nielson Challenge

Erin Go Bragh 7.77k

Westminster, CO

Saturday, March 14th, 2026

View details for race Erin Go Bragh 7.77k

HRCA St. Patrick's Day 5K

Highlands Ranch, CO

Saturday, March 14th, 2026

View details for race HRCA St. Patrick's Day 5K

8th Annual ☘️ShamROCK Stampede 5k & RRCA 10k St...

Castle Rock, CO

Saturday, March 14th, 2026

10K

View details for race 8th Annual ☘️ShamROCK Stampede 5k & RRCA 10k State Championship☘️

Lucky Leprechaun 5K

Boulder, CO

Sunday, March 15th, 2026

View details for race Lucky Leprechaun 5K

All-Out Spring Fever

Golden, CO

Sunday, March 22nd, 2026

Half

10K

Trail

View details for race All-Out Spring Fever

Central Park 5k

Denver, CO

Sunday, March 22nd, 2026

Fast

View details for race Central Park 5k

The City Park Circuit, Presented by New Balance

Denver, CO

Saturday, March 28th, 2026

View details for race The City Park Circuit, Presented by New Balance

RMRR Spring Marathon Training Series #1

Thornton, CO

Sunday, March 29th, 2026

10 Miles

Ultra

View details for race RMRR Spring Marathon Training Series #1

Three Creeks Half Marathon

Englewood, CO

Sunday, April 5th, 2026

Half

Trail

Fast

View details for race Three Creeks Half Marathon

Hot Laps - Denver

Denver, CO

Thursday, April 9th, 2026

View details for race Hot Laps - Denver

RMRR Spring Marathon Training Series #2

Thornton, CO

Saturday, April 11th, 2026

10 Miles

Ultra

View details for race RMRR Spring Marathon Training Series #2

Rockin on the River 5K

Littleton, CO

Saturday, April 11th, 2026

View details for race Rockin on the River 5K

Run Through The Decades 6K/7K/8K/Half - Colorad...

Colorado Springs, CO

Saturday, April 11th, 2026

Half

View details for race Run Through The Decades 6K/7K/8K/Half - Colorado Springs

Dash for Detection: Oral Cancer Awareness 5K

Denver, CO

Saturday, April 11th, 2026

View details for race Dash for Detection: Oral Cancer Awareness 5K

Donut Dash

Denver, CO

Sunday, April 12th, 2026

Fast

View details for race Donut Dash

Hop Into Spring 5K - Denver

Denver, CO

Sunday, April 12th, 2026

View details for race Hop Into Spring 5K - Denver

Spring Fling Prairie Dog Half, 10k, & 5k

Arvada, CO

Sunday, April 12th, 2026

Half

10K

View details for race Spring Fling Prairie Dog Half, 10k, & 5k

Prairie Dog Run Series

Louisville, CO

Sunday, April 12th, 2026

Half

View details for race Prairie Dog Run Series

Platte River Half-Marathon and Relay

Littleton, CO

Sunday, April 12th, 2026

Half

Trail

View details for race Platte River Half-Marathon and Relay

Healthy Kids Running Series Spring 2026 - Denve...

Denver, CO

Sunday, April 12th, 2026

View details for race Healthy Kids Running Series Spring 2026 - Denver, CO

Healthy Kids Running Series Spring 2026 - Auror...

Aurora, CO

Sunday, April 12th, 2026

View details for race Healthy Kids Running Series Spring 2026 - Aurora, CO

RMRR April Trophy Series

Denver, CO

Sunday, April 12th, 2026

View details for race RMRR April Trophy Series

All-Out Beat the Heat

Westminster, CO

Saturday, April 18th, 2026

Half

10K

Trail

View details for race All-Out Beat the Heat

Kerr Gulch Amble

Evergreen, CO

Saturday, April 18th, 2026

View details for race Kerr Gulch Amble

Donot Stop Half Marathon (5k/10k) - Colorado Sp...

Colorado Springs, CO

Saturday, April 18th, 2026

10K

1 Mile

View details for race Donot Stop Half Marathon (5k/10k) - Colorado Springs

Woody's Tortoise And Hare

Fountain, CO

Saturday, April 18th, 2026

Fast

View details for race Woody's Tortoise And Hare

DoNot Stop Half Marathon (5k/10k) - Denver

Littleton, CO

Sunday, April 19th, 2026

10K

1 Mile

View details for race DoNot Stop Half Marathon (5k/10k) - Denver

Fairmount Fit Fest

Golden, CO

Sunday, April 19th, 2026

View details for race Fairmount Fit Fest

Runs With Scissors Races

Brighton, CO

Saturday, April 25th, 2026

Half

Marathon

Ultra

View details for race Runs With Scissors Races

Alpine Autism Center 19th Annual "Run for the O...

Colorado Springs, CO

Saturday, April 25th, 2026

View details for race Alpine Autism Center 19th Annual "Run for the One" 5k Walk/Run

Blue Heron Half & 5K

Brighton, CO

Sunday, April 26th, 2026

Half

Fast

View details for race Blue Heron Half & 5K

Unicorn 5k (Denver-East)

Denver, CO

Sunday, April 26th, 2026

View details for race Unicorn 5k (Denver-East)

2026 Dash & Dine 5k Run Series

Boulder, CO

Tuesday, April 28th, 2026

View details for race 2026 Dash & Dine 5k Run Series

Friends of the National Center Science Stride 5K

Boulder, CO

Friday, May 1st, 2026

View details for race Friends of the National Center Science Stride 5K

Adams County Foster Care 5K Run/Walk and 1 mile...

Brighton, CO

Saturday, May 2nd, 2026

1 Mile

View details for race Adams County Foster Care 5K Run/Walk and 1 mile fun run

Walk Run or Roll for Daniel

Colorado Springs, CO

Saturday, May 2nd, 2026

View details for race Walk Run or Roll for Daniel

Greenland Trail Races

Larkspur, CO

Saturday, May 2nd, 2026

Ultra

Trail

View details for race Greenland Trail Races

RMRR May Trophy Series

Denver, CO

Sunday, May 3rd, 2026

Fast

View details for race RMRR May Trophy Series

Rise Against Suicide - Emerge 5K

Boulder, CO

Sunday, May 3rd, 2026

View details for race Rise Against Suicide - Emerge 5K

Dash & Dine 5k #2

Boulder, CO

Tuesday, May 5th, 2026

View details for race Dash & Dine 5k #2

Explore more in Castle Rock, CO

Distances:

5K 10K Half Marathon Marathon

Months:

February March April

Tags:

Trail Boston Qualifiers Fast Courses

State:

All Colorado races

Don't see your race? Add it!

Add Your Race (Free)