Upcoming 5K Races Near Castle Rock, CO

Name: Muddy Dash | Denver 2026
Start: 2026-06-20
End: 2026-06-20
Location: Dacono

RMRR Feb Trophy Series

Englewood, CO

Sunday, February 1st, 2026

Featured

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Westy Winter Waggle 5&10k

Westminster, CO

Saturday, February 7th, 2026

10K

View details for race Westy Winter Waggle 5&10k

Super Half Marathon™ & Game Day 5K™ Presented b...

Colorado Springs, CO

Sunday, February 8th, 2026

Half

Fast

View details for race Super Half Marathon™ & Game Day 5K™ Presented by Toyota

Super Sunday 5K

Littleton, CO

Sunday, February 8th, 2026

View details for race Super Sunday 5K

Heart Throb 5k

Arvada, CO

Saturday, February 14th, 2026

Fast

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Parker Parks and Recreation Love 'em or Leave '...

Parker, CO

Saturday, February 14th, 2026

10K

View details for race Parker Parks and Recreation Love 'em or Leave 'em Valentine's Day 5K/10K

Ralston Creek Half Marathon & 5k

Arvada, CO

Sunday, February 15th, 2026

Trail

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Highlands Ranch 5k

Highlands Ranch, CO

Sunday, February 22nd, 2026

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All-Out Mardi Crawl

Arvada, CO

Sunday, February 22nd, 2026

Half

10K

Trail

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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 - Denver

Denver, 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

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

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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

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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

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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

Woody's Tortoise And Hare

Fountain, CO

Saturday, April 18th, 2026

Fast

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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

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) - Denver

Littleton, CO

Sunday, April 19th, 2026

10K

1 Mile

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

Fairmount 5k

Golden, CO

Sunday, April 19th, 2026

1 Mile

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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

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

Walk Run or Roll for Daniel

Colorado Springs, CO

Saturday, May 2nd, 2026

View details for race Walk Run or Roll for Daniel

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

RMRR May Trophy Series

Denver, CO

Sunday, May 3rd, 2026

Fast

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Dash & Dine 5k #2

Boulder, CO

Tuesday, May 5th, 2026

View details for race Dash & Dine 5k #2

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

HRCA Mother's Day 5K

Highlands Ranch, CO

Saturday, May 9th, 2026

View details for race HRCA Mother's Day 5K

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

Denver Mother's Day 5K

Denver, CO

Sunday, May 10th, 2026

View details for race Denver Mother's Day 5K

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

Colorado Women's Classic - Westminster

Westminster, CO

Sunday, May 10th, 2026

10K

10 Miles

View details for race Colorado Women's Classic - Westminster

Hometown Half Marathon & 5k/10k - Denver

Denver, CO

Sunday, May 10th, 2026

10K

Half

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

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

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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

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Treat Trot Denver

Denver, CO

Saturday, June 13th, 2026

10K

15K

View details for race Treat Trot Denver

Treat Trot Colorado Springs

Colorado Springs, CO

Sunday, June 14th, 2026

10K

15K

View details for race Treat Trot Colorado Springs

Fatherhood 5k Family Run/Walk

Colorado Springs, CO

Saturday, June 20th, 2026

View details for race Fatherhood 5k Family Run/Walk

Parker Parks and Recreation Dash Across the Dam...

Parker, CO

Saturday, June 20th, 2026

View details for race Parker Parks and Recreation Dash Across the Dam Father’s Day 5K

Muddy Dash | Denver 2026

Dacono, CO

Saturday, June 20th, 2026

View details for race Muddy Dash | Denver 2026

Explore more in Castle Rock, CO

Distances:

5K 10K Half Marathon Marathon

Months:

January February March

Tags:

Trail Boston Qualifiers Fast Courses

State:

All Colorado races

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