Upcoming 5K Races Near Castle Rock, CO

Name: Treat Trot Denver
Start: 2026-06-13
End: 2026-06-13
Location: Denver

Highlands Ranch 5k

Highlands Ranch, CO

Sunday, February 22nd, 2026

Featured

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All-Out Mardi Crawl

Arvada, CO

Sunday, February 22nd, 2026

Half

10K

Trail

View details for race All-Out Mardi Crawl

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

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

RMRR March Trophy Series

Littleton, CO

Sunday, March 1st, 2026

Fast

View details for race RMRR March Trophy Series

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☘️

HRCA St. Patrick's Day 5K

Highlands Ranch, CO

Saturday, March 14th, 2026

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

Lucky Leprechaun 5K

Boulder, CO

Sunday, March 15th, 2026

View details for race Lucky Leprechaun 5K

Central Park 5k

Denver, CO

Sunday, March 22nd, 2026

Fast

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All-Out Spring Fever

Golden, CO

Sunday, March 22nd, 2026

Half

10K

Trail

View details for race All-Out Spring Fever

Rockin on the River 5K

Littleton, CO

Saturday, April 11th, 2026

View details for race Rockin on the River 5K

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

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Platte River Half-Marathon and Relay

Littleton, CO

Sunday, April 12th, 2026

Half

Trail

View details for race Platte River Half-Marathon and Relay

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

Hop Into Spring 5K - Denver

Denver, CO

Sunday, April 12th, 2026

View details for race Hop Into Spring 5K - Denver

All-Out Beat the Heat

Westminster, CO

Saturday, April 18th, 2026

Half

10K

Trail

View details for race All-Out Beat the Heat

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

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Fairmount Fit Fest

Golden, CO

Sunday, April 19th, 2026

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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

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)

Dash & Dine 5k

Boulder, CO

Tuesday, April 28th, 2026

View details for race Dash & Dine 5k

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

RMRR May Trophy Series

Denver, CO

Sunday, May 3rd, 2026

Fast

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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

HRCA Mother's Day 5K

Highlands Ranch, CO

Saturday, May 9th, 2026

View details for race HRCA Mother's Day 5K

Cherry Creek Race for the Watershed 2026

Aurora, CO

Saturday, May 9th, 2026

View details for race Cherry Creek Race for the Watershed 2026

2026 Five Star 5K, Mile of Smiles, and Wellness...

Brighton, CO

Saturday, May 9th, 2026

1 Mile

View details for race 2026 Five Star 5K, Mile of Smiles, and Wellness Festival

Hometown Half Marathon & 5k/10k - Colorado Springs

Colorado Springs, CO

Saturday, May 9th, 2026

10K

Half

View details for race Hometown Half Marathon & 5k/10k - Colorado Springs

Parker Parks and Recreation Miles over the Mead...

Parker, CO

Saturday, May 9th, 2026

1 Mile

View details for race Parker Parks and Recreation Miles over the Meadow Mother’s Day 5K & Family Fun Trek

Women's Distance Festival 5K

Colorado Springs, CO

Saturday, May 9th, 2026

View details for race Women's Distance Festival 5K

Hometown Half Marathon & 5k/10k - Denver

Denver, CO

Sunday, May 10th, 2026

10K

Half

View details for race Hometown Half Marathon & 5k/10k - Denver

Colorado Women's Classic - Westminster

Westminster, CO

Sunday, May 10th, 2026

10K

10 Miles

View details for race Colorado Women's Classic - Westminster

Super Mom 5K/10K/Half - Colorado Springs

Colorado Springs, CO

Sunday, May 10th, 2026

10K

Half

View details for race Super Mom 5K/10K/Half - Colorado Springs

Denver Mother's Day 5K

Denver, CO

Sunday, May 10th, 2026

View details for race Denver Mother's Day 5K

Miles for Smiles 5K

Arvada, CO

Sunday, May 17th, 2026

Trail

View details for race Miles for Smiles 5K

Farish Trail Race

Woodland Park, CO

Saturday, May 23rd, 2026

Half

10K

Trail

View details for race Farish Trail Race

5th Annual Angel Run at Red Leg Brewing

Colorado Springs, CO

Monday, May 25th, 2026

10K

View details for race 5th Annual Angel Run at Red Leg Brewing

Aiden's Adventure 5k

Colorado Springs, CO

Saturday, June 6th, 2026

1 Mile

View details for race Aiden's Adventure 5k

Colorado 13er (Half Marathon/10k/5k)

Louisville, CO

Sunday, June 7th, 2026

Half

10K

Trail

View details for race Colorado 13er (Half Marathon/10k/5k)

Flamingo Day 5K

Denver, CO

Sunday, June 7th, 2026

View details for race Flamingo Day 5K

All-Out Summer Breeze

Arvada, CO

Saturday, June 13th, 2026

Half

10K

Trail

View details for race All-Out Summer Breeze

Treat Trot Denver

Denver, CO

Saturday, June 13th, 2026

10K

15K

View details for race Treat Trot Denver

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

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