Upcoming Races In Colorado, US

Greenland Trail Races

Larkspur, CO

Saturday, May 3rd, 2025

Hayden Cog Run

Hayden, CO

Saturday, May 3rd, 2025

Cinco De Mayo Run: Against All Odds DENVER/AURORA

Aurora, CO

Saturday, May 3rd, 2025

MayFest Fun Run

Parachute, CO

Saturday, May 3rd, 2025

Run for the Trees - BSBF 2-Mile Run

Loveland, CO

Saturday, May 3rd, 2025

Newbie to 5K

Pueblo, CO

Saturday, May 3rd, 2025

2025 FK5K Training

Fort Collins, CO

Saturday, May 3rd, 2025

Nielson Challenge

Colorado Springs, CO

Saturday, May 3rd, 2025

21st Annual Bob Turner Classic 5k Run/Walk

Berthoud, CO

Saturday, May 3rd, 2025

Run For The Trees - 2 Mile Fun Run

Loveland, CO

Saturday, May 3rd, 2025

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

Brighton, CO

Saturday, May 3rd, 2025

Cinco De Mayo Run: Against All Odds DENVER/AURORA

Centennial, CO

Saturday, May 3rd, 2025

Water Wells for Africa 5k Walk/Run

Silt, CO

Sunday, May 4th, 2025

The Colorado Marathon

Fort Collins, CO

Sunday, May 4th, 2025

2025 Altitude Elementary Moose Mudder

Aurora, CO

Sunday, May 4th, 2025

Longmont Half & 5k (LM Half)

Longmont, CO

Sunday, May 4th, 2025

RMRR May Trophy Series

Denver, CO

Sunday, May 4th, 2025

Healthy Kids Running Series Spring 2025 - Trini...

Trinidad, CO

Sunday, May 4th, 2025

Fairmount 5k

Golden, CO

Sunday, May 4th, 2025

Dash & Dine 5k #2

Boulder, CO

Tuesday, May 6th, 2025

2025 Gluten Free Gallop 5K

Littleton, CO

Saturday, May 10th, 2025

Quad Rock 50/25mi

Bellvue, CO

Saturday, May 10th, 2025

Quad Rock 50/25mi Trail Race

Fort Collins, CO

Saturday, May 10th, 2025

HRCA Mother's Day 5K

Highlands Ranch, CO

Saturday, May 10th, 2025

Quad Rock 25 & 50 Mile Trail Races

Bellvue, CO

Saturday, May 10th, 2025

Parker Parks and Recreation Miles over the Mead...

Parker, CO

Saturday, May 10th, 2025

MomCo Virtual Mother's Day Run

Denver, CO

Saturday, May 10th, 2025

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

Denver, CO

Saturday, May 10th, 2025

Colterris Wine Run 5k

Palisade, CO

Saturday, May 10th, 2025

Mamas Day 5K & Family Fun Run

Buena Vista, CO

Saturday, May 10th, 2025

Muddy Dash | Denver

Erie, CO

Saturday, May 10th, 2025

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

Littleton, CO

Saturday, May 10th, 2025

Women's Distance Festival 5K

Colorado Springs, CO

Saturday, May 10th, 2025

Denver Mother's Day 5K

Denver, CO

Sunday, May 11th, 2025

Frank Shorter Track Classic

Longmont, CO

Sunday, May 11th, 2025

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

Colorado Springs, CO

Sunday, May 11th, 2025

Colorado Women's Classic - Westminster

Westminster, CO

Sunday, May 11th, 2025

Dash & Dine 5k #3

Boulder, CO

Tuesday, May 13th, 2025

#WeAreHealthcare: Color the Campus 1K & 3K (ish)

Delta, CO

Thursday, May 15th, 2025

Know. Grow. GO RUN. 5K

Loveland, CO

Friday, May 16th, 2025

Spirit Challenge Run for Autism 10k and 5k

Steamboat Springs, CO

Saturday, May 17th, 2025

Canine On the Creek

Dumont, CO

Saturday, May 17th, 2025

Endure Trail Runs

Divide, CO

Saturday, May 17th, 2025

Memorial Day Run & March: To Help Feed Homeless...

Colorado Springs, CO

Saturday, May 17th, 2025

CupCake 5k Presented by DuMyon Martial Arts

Colorado Springs, CO

Saturday, May 17th, 2025

Growing Home - Colfax Fundraiser

Westminster, CO

Saturday, May 17th, 2025

Stride for Wellness

Colorado Springs, CO

Sunday, May 18th, 2025

Healthy Kids Running Series Spring 2025 - Auror...

Aurora, CO

Sunday, May 18th, 2025

Miles for Smiles 5K

Arvada, CO

Sunday, May 18th, 2025

Healthy Kids Running Series Spring 2025 - Denve...

Denver, CO

Sunday, May 18th, 2025