Upcoming 10K Races Near Thornton, CO

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

Arvada, CO

Sunday, April 13th, 2025

Great Western Trail Race

Severance, CO

Saturday, April 19th, 2025

All-Out Beat the Heat

Westminster, CO

Saturday, April 19th, 2025

2025 Earth Day 1M 5K 10K 13.1 26.2- Benefitting...

Boulder, CO

Tuesday, April 22nd, 2025

NoCo Half Marathon & 10K

Loveland, CO

Sunday, April 27th, 2025

Cinco De Mayo Run: Against All Odds DENVER/AURORA

Aurora, CO

Saturday, May 3rd, 2025

Race Through America Series

Denver, CO

Saturday, May 3rd, 2025

Cinco De Mayo Run: Against All Odds DENVER/AURORA

Centennial, CO

Saturday, May 3rd, 2025

The Colorado Marathon

Fort Collins, CO

Sunday, May 4th, 2025

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

Littleton, CO

Saturday, May 10th, 2025

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

Denver, CO

Saturday, May 10th, 2025

Colorado Women's Classic - Westminster

Westminster, CO

Sunday, May 11th, 2025

2025 Be Kind to Your Mind 1M 5K 10K 13.1 26.2- ...

Denver, CO

Saturday, May 17th, 2025

2025 Memorial Day 1M 5K 10K 13.1 26.2- Benefitt...

Denver, CO

Saturday, May 24th, 2025

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

Louisville, CO

Sunday, June 1st, 2025

All-Out Summer Breeze

Arvada, CO

Saturday, June 7th, 2025

Father's Day Classic 10k, 5k, & 1 Mile

Arvada, CO

Sunday, June 15th, 2025

Red, White and Brew 5k, 10k, Half Marathon & 12...

Windsor, CO

Saturday, June 21st, 2025

Hometown Half Marathon & 5k/10k - Denver

Westminster, CO

Saturday, June 21st, 2025

Hometown Half Marathon & 5k/10k - Denver

Denver, CO

Saturday, June 21st, 2025

Let Freedom Run 5k/10k

Louisville, CO

Friday, July 4th, 2025

All-Out Dog Days

Westminster, CO

Saturday, July 12th, 2025

Summer Splash Prairie Dog Half, 10k, & 5k

Castle Rock, CO

Saturday, July 19th, 2025

All-Out Runapalooza

Arvada, CO

Saturday, August 2nd, 2025

Summer Sizzler- Denver

Thornton, CO

Saturday, August 16th, 2025

Summer Sizzler- Denver

Denver, CO

Saturday, August 16th, 2025

Labor Day Half Marathon

Parker, CO

Monday, September 1st, 2025

HRCA Wildcat Mountain Trail Races

Littleton, CO

Saturday, September 6th, 2025

RMRR September Trophy Series

Thornton, CO

Sunday, September 7th, 2025

Parker Parks and Recreation So Long to Summer 5...

Parker, CO

Saturday, September 13th, 2025

All-Out Fall Fest

Westminster, CO

Saturday, September 13th, 2025

National Chocolate Day: Run for Chocolates DENV...

Centennial, CO

Saturday, September 13th, 2025

Spooky Sprint - Denver

Denver, CO

Sunday, September 14th, 2025

Spooky Sprint - Denver

Littleton, CO

Sunday, September 14th, 2025

Move Forward 5K & 10K

Denver, CO

Saturday, September 20th, 2025

19th Annual Golden Gallop

Golden, CO

Sunday, September 21st, 2025

National Coffee Day: Run for Coffee DENVER/AURORA

Centennial, CO

Saturday, September 27th, 2025

Pioneer Prairie Dog Half, 10k & 5k

Westminster, CO

Saturday, September 27th, 2025

National Singles Day: Singles & Friends Running...

Centennial, CO

Saturday, September 27th, 2025

Not So Flatt Breast Cancer Awareness Run/Walk

Westminster, CO

Saturday, October 4th, 2025

Windsor Marathon, Half Marathon, 10k & 5k

Windsor, CO

Sunday, October 5th, 2025

The bRUNch Run™

Denver, CO

Sunday, October 12th, 2025

City Park 5k/10k & 1 Mile Walk of Hope for Panc...

Denver, CO

Saturday, November 1st, 2025

Turkey Trails- Denver

Denver, CO

Sunday, November 2nd, 2025

Turkey Trails- Denver

Lakewood, CO

Sunday, November 2nd, 2025

All-Out Kooky-Spooky

Golden, CO

Sunday, November 2nd, 2025

Denver Veterans Day Run

Denver, CO

Saturday, November 8th, 2025

Pumpkin Pie 5K/10K

Denver, CO

Saturday, November 15th, 2025

10k Turkey Trek & 5k Turkey Trot - Now With HAL...

Arvada, CO

Saturday, November 22nd, 2025

Broomfield Turkey Day 5K/10K

Broomfield, CO

Thursday, November 27th, 2025