Upcoming 5K Races Near Castle Rock, CO

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Race to Cure Sarcoma Denver

Denver, CO

Saturday, October 24th, 2026

View details for race Race to Cure Sarcoma Denver

Apex Foundation Trick or Trot 5K & Halloween Hunt

Arvada, CO

Saturday, October 24th, 2026

1 Mile

View details for race Apex Foundation Trick or Trot 5K & Halloween Hunt

The 14th Annual Odyssey Odyssey - 2026

Denver, CO

Sunday, October 25th, 2026

1 Mile

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Ghosts and Goblins 5K/10K

Denver, CO

Sunday, October 25th, 2026

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Spooky Sprint - Colorado Springs

Colorado Springs, CO

Saturday, October 31st, 2026

10K

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Halloween Fun Run 5k & 1mile - Zombie Theme

Idaho Springs, CO

Saturday, October 31st, 2026

1 Mile

View details for race Halloween Fun Run 5k & 1mile - Zombie Theme

I Ain't Scared (of 5k)

Thornton, CO

Saturday, October 31st, 2026

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Feet for Justice Run

Denver, CO

Sunday, November 1st, 2026

10K

Fast

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All-Out Kooky-Spooky

Golden, CO

Sunday, November 1st, 2026

Half

10K

Trail

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RMRR November 5k/15k

Denver, CO

Sunday, November 1st, 2026

15K

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City Park Classic (5k/10k & 1 Mile Walk of Hope...

Denver, CO

Saturday, November 7th, 2026

10K

1 Mile

View details for race City Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research)

Turkey Trails- Denver

Littleton, CO

Saturday, November 7th, 2026

1 Mile

10K

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Turkey Trails- Denver

Denver, CO

Saturday, November 7th, 2026

1 Mile

10K

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Turkey Trails- Denver

Lakewood, CO

Saturday, November 7th, 2026

1 Mile

10K

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Colorado Springs Veterans Day 5k

Colorado Springs, CO

Sunday, November 8th, 2026

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Turkey Trails - Colorado Springs

Colorado Springs, CO

Sunday, November 8th, 2026

1 Mile

10K

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Denver Veterans Day Run

Denver, CO

Saturday, November 14th, 2026

10K

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Girls on the Run Denver Metro 5K

Denver, CO

Sunday, November 15th, 2026

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TURKEY TREK (13.1, 10k, 5k & 2k)

Arvada, CO

Saturday, November 21st, 2026

Half

10K

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Pumpkin Pie 5K/10K

Denver, CO

Saturday, November 21st, 2026

10K

Fast

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Parker Parks and Recreation Turkey Day 5K FUN R...

Parker, CO

Thursday, November 26th, 2026

View details for race Parker Parks and Recreation Turkey Day 5K FUN Run/Walk

AdventHealth Avista Louisville Turkey Trot

Louisville, CO

Thursday, November 26th, 2026

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Gobble Wobble Run 2026

Littleton, CO

Thursday, November 26th, 2026

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Broomfield Turkey Day 5K/10K

Broomfield, CO

Thursday, November 26th, 2026

10K

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Chasing Santa 5k/Cycling Santa Toy Drive ...

Colorado Springs, CO

Saturday, December 5th, 2026

10K

10 Miles

View details for race Chasing Santa 5k/Cycling Santa Toy Drive Presented by: Springs Law Group

Candy Cane Course - Colorado Springs

Colorado Springs, CO

Saturday, December 5th, 2026

1 Mile

10K

View details for race Candy Cane Course - Colorado Springs

Candy Cane Course - Denver

Denver, CO

Saturday, December 5th, 2026

1 Mile

10K

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All-Out Fa La La

Westminster, CO

Saturday, December 5th, 2026

Half

10K

Trail

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Candy Cane Course - Denver

Westminster, CO

Sunday, December 6th, 2026

1 Mile

10K

View details for race Candy Cane Course - Denver

WinterFest 5k & Fun Run

Thornton, CO

Saturday, December 12th, 2026

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Santa's Dash for Ca$h

Denver, CO

Saturday, December 19th, 2026

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Ugly Sweater 5K

Denver, CO

Sunday, December 20th, 2026

Fast

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Resolute Runner 5k

Arvada, CO

Friday, January 1st, 2027

Trail

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All-Out Polar Prowl

Arvada, CO

Saturday, January 9th, 2027

Half

10K

Trail

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All-Out Mardi Crawl

Arvada, CO

Saturday, February 6th, 2027

Half

10K

Trail

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Heart Throb 5k

Arvada, CO

Saturday, February 13th, 2027

Fast

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Highlands Ranch 5k

Highlands Ranch, CO

Sunday, February 28th, 2027

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All-Out Spring Fever

Golden, CO

Sunday, March 21st, 2027

Half

10K

Trail

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Donut Dash

Denver, CO

Sunday, April 4th, 2027

Fast

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Platte River Half-Marathon, Relay & 5k

Littleton, CO

Sunday, April 11th, 2027

Half

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All-Out Beat the Heat

Westminster, CO

Saturday, April 24th, 2027

Half

10K

Trail

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Unicorn 5k (Denver-East)

Denver, CO

Sunday, April 25th, 2027

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Emerge 5K

Boulder, CO

Sunday, May 2nd, 2027

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Colorado Women's Classic - Westminster

Westminster, CO

Sunday, May 9th, 2027

10K

10 Miles

View details for race Colorado Women's Classic - Westminster

Denver Mother's Day 5K

Denver, CO

Sunday, May 9th, 2027

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Flamingo Day 5K

Denver, CO

Sunday, June 6th, 2027

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

Louisville, CO

Sunday, June 6th, 2027

Half

10K

Trail

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

Conifer Climb

Conifer, CO

Monday, September 2nd, 2030

Ultra

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