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Half Marathons Near Colorado
Showing the next 50 runs that match your filters
Featured
Bigfoot Half Marathon & 5K
Live music, music + FREE festival!
Date: Apr 25, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Estes Park, Colorado
Featured
Samson's Revenge Trail Race
Mostly fast single track course!
Date: May 23, 2026 - Saturday
Size: 100 - 500 participants
Location: Estes Park, Colorado
Always Hope Easter Run 5K/10K/13.1 - Denver/Aurora
Date: Apr 4, 2026 - Saturday
Size: 100 - 500 participants
Location: Centennial, Colorado
Three Creeks Half Marathon
Date: Apr 5, 2026 - Sunday
Size: 100 - 500 participants
Location: Greenwood Village, Colorado
Mountain Ridge Trail Race
Date: Apr 11, 2026 - Saturday
Size: 100 - 500 participants
Location: Highlands Ranch, Colorado
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Desert Rats Trail Running Festival by UTMB
Date: Apr 11-12, 2026 - Saturday to Sunday
Size: 500 - 1,000 participants
Location: Fruita, Colorado
Albuquerque Half Marathon
Date: Apr 11, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Albuquerque, New Mexico
Boulder Rez Half
Date: Apr 11, 2026 - Saturday
Size: 100 - 500 participants
Location: Boulder, Colorado
The Spring Fling Prairie Dog Half, 10K & 5K
Date: Apr 12, 2026 - Sunday
Size: 500 - 1,000 participants
Location: Arvada, Colorado
Cedro Peak Ultra Marathon & Half Marathon
Date: Apr 18, 2026 - Saturday
Size: 100 - 500 participants
Location: Albuquerque, New Mexico
DoNot Stop Half Marathon/5k/10k - Colorado Springs
Date: Apr 18, 2026 - Saturday
Size: 100 - 500 participants
Location: Colorado Springs, Colorado
Horsetooth Half Marathon
Date: Apr 19, 2026 - Sunday
Size: 1,000 - 5,000 participants
Location: Fort Collins, Colorado
DoNot Stop Half Marathon/5k/10k - Denver
Date: Apr 19, 2026 - Sunday
Size: 100 - 500 participants
Location: Littleton, Colorado
Thelma and Louise Marathon, Half Marathon and 15K
Date: Apr 25, 2026 - Saturday
Size: 100 - 500 participants
Location: Moab, Utah
Bigfoot Half Marathon & 5K
Date: Apr 25, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Estes Park, Colorado
NoCo Half Marathon & 10K
Date: Apr 25, 2026 - Saturday
Size: 100 - 500 participants
Location: Loveland, Colorado
Coffee Lovers Run 5K/10K/13.1 - Denver/Aurora
Date: Apr 25, 2026 - Saturday
Size: 100 - 500 participants
Location: Centennial, Colorado
Blue Heron Half Marathon and 5K
Date: Apr 26, 2026 - Sunday
Size: 100 - 500 participants
Location: Thornton, Colorado
Shiprock Marathon
Date: May 1-2, 2026 - Friday to Saturday
Size: 1,000 - 5,000 participants
Location: Shiprock, New Mexico
Cinco De Mayo Run 5K/10K/13.1 - Denver/Aurora
Date: May 2, 2026 - Saturday
Size: 100 - 500 participants
Location: Centennial, Colorado
Colorado Marathon
Date: May 3, 2026 - Sunday
Size: 1,000 - 5,000 participants
Location: Fort Collins, Colorado
Longmont Half & 5k
Date: May 3, 2026 - Sunday
Size: 100 - 500 participants
Location: Longmont, Colorado
Valkyrie Trail Race
Date: May 9, 2026 - Saturday
Size: 100 - 500 participants
Location: Colorado Springs, Colorado
Hometown Half Marathon & 5k/10k - Colorado Springs
Date: May 9, 2026 - Saturday
Size: 100 - 500 participants
Location: Colorado Springs, Colorado
Mother's Day Run - Boulder Half, 10k & 5k
Date: May 9, 2026 - Saturday
Size: 100 - 500 participants
Location: Boulder County, Colorado
Runtastic Dino
Date: May 9, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Vernal, Utah
Hometown Half Marathon & 5k/10k - Denver
Date: May 10, 2026 - Sunday
Size: 100 - 500 participants
Location: Denver, Colorado
Super Mom 5K/10K/Half - Colorado Springs
Date: May 10, 2026 - Sunday
Size: 100 - 500 participants
Location: Colorado Springs, Colorado
Colfax Marathon
Date: May 16-17, 2026 - Saturday to Sunday
Size: 10,000+ participants
Location: Denver, Colorado
Endure 12 Hour, 24 Hour, and Half Marathon
Date: May 16, 2026 - Saturday
Size: 100 - 500 participants
Location: Teller County, Colorado
Memorial Day Run 5K/10K/13.1 - Denver/Aurora
Date: May 23, 2026 - Saturday
Size: 100 - 500 participants
Location: Centennial, Colorado
Spirit Trail Run
Date: May 24, 2026 - Sunday
Size: 100 - 500 participants
Location: Buena Vista, Colorado
Stars, Stripes & Steps
Get $3.00 Off - Use Code RUNGUIDES
Date: May 25, 2026 - Monday
Size: 1 - 100 participants
Location: Hot Springs, South Dakota
Colorado Springs Spartan Weekend
Date: May 30-31, 2026 - Saturday to Sunday
Size: 500 - 1,000 participants
Location: Colorado Springs, Colorado
Deadwood-Mickelson Trail Marathon
Date: Jun 6-7, 2026 - Saturday to Sunday
Size: 1,000 - 5,000 participants
Location: Deadwood, South Dakota
Basalt Half Marathon
Date: Jun 6, 2026 - Saturday
Size: 100 - 500 participants
Location: Basalt, Colorado
Steamworks Half Marathon
Date: Jun 6, 2026 - Saturday
Size: 100 - 500 participants
Location: Durango, Colorado
Run for Breast Cancer 5K/10K/13.1 - Denver/Aurora
Date: Jun 6, 2026 - Saturday
Size: 100 - 500 participants
Location: Centennial, Colorado
Colorado 13er, 10k and 5k
Date: Jun 7, 2026 - Sunday
Size: 100 - 500 participants
Location: Louisville, Colorado
Steamboat Marathon
Date: Jun 7, 2026 - Sunday
Size: 500 - 1,000 participants
Location: Steamboat Springs, Colorado
Casper Marathon
Date: Jun 7, 2026 - Sunday
Size: 100 - 500 participants
Location: Casper, Wyoming
All-Out Summer Breeze
Date: Jun 13, 2026 - Saturday
Size: 100 - 500 participants
Location: Arvada, Colorado
Barr Lake Trail Race
Date: Jun 13, 2026 - Saturday
Size: 100 - 500 participants
Location: Commerce City, Colorado
Estes Park Marathon
Date: Jun 20-21, 2026 - Saturday to Sunday
Size: 500 - 1,000 participants
Location: Estes Park, Colorado
Run Devils Tower
Date: Jun 20-21, 2026 - Saturday to Sunday
Size: 100 - 500 participants
Location: Devils Tower, Wyoming
Run Juneteenth Day 5K/10K/13.1 - Denver/Aurora
Date: Jun 20, 2026 - Saturday
Size: 100 - 500 participants
Location: Centennial, Colorado
Slacker Half Marathon, Relay & 4 Mile Races
Date: Jun 27, 2026 - Saturday
Size: 1,000 - 5,000 participants
Location: Georgetown, Colorado
Leadville Trail Marathon & Heavy Half
Date: Jun 27, 2026 - Saturday
Size: 1,000 - 5,000 participants
Location: Leadville, Colorado
July 4th ROCK-IT RUN 5k, Half Marathon & Relay
Date: Jul 4, 2026 - Saturday
Size: 100 - 500 participants
Location: Castle Rock, Colorado
July 4th Run 5K/10K/13.1 - Denver/Aurora
Date: Jul 4, 2026 - Saturday
Size: 100 - 500 participants
Location: Centennial, Colorado
All-Out Dog Days
Date: Jul 11, 2026 - Saturday
Size: 100 - 500 participants
Location: Westminster, Colorado
All-Out Beat the Heat
Date: Jul 11, 2026 - Saturday
Size: 100 - 500 participants
Location: Westminster, Colorado
