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Half Marathons Near Colorado
Showing the next 50 runs that match your filters
Featured
Hot Chocolate Run - Denver
Get 15% Off - Use Code RGCO
Date: Oct 4, 2026 - Sunday
Size: 1,000 - 5,000 participants
Location: Denver, Colorado
Featured
Run the Rocks
Get $10 Off - Use Code RUNGUIDES2026
Date: Oct 11, 2026 - Sunday
Size: 1,000 - 5,000 participants
Location: Golden, Colorado
Heatwave Half Marathon - Colorado Springs
Date: Jul 12, 2026 - Sunday
Size: 100 - 500 participants
Location: Colorado Springs, Colorado
Summer Splash Prairie Dog Half Marathon, 10k & 5k
Date: Jul 18, 2026 - Saturday
Size: 100 - 500 participants
Location: Castle Rock, Colorado
Aspen Valley Marathon
Date: Jul 25, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Aspen, Colorado
Are you organizing a running event?
Run for Coffee Lovers 5K/10K/13.1 - Denver/Aurora
Date: Jul 25, 2026 - Saturday
Size: 100 - 500 participants
Location: Centennial, Colorado
Rocky Mountain Half Marathon and 5K
Get $10 Off - Use Code VRRUNGUIDES
Date: Jul 31-Aug 1, 2026 - Friday to Saturday
Size: 500 - 1,000 participants
Location: Estes Park, Colorado
Sheep Mountain Ultras
Date: Aug 1, 2026 - Saturday
Size: 100 - 500 participants
Location: Fairplay, Colorado
Aspen Backcountry
Date: Aug 1, 2026 - Saturday
Size: 100 - 500 participants
Location: Aspen, Colorado
Popsicle 5K/10K/Half - Colorado Springs
Date: Aug 1, 2026 - Saturday
Size: 100 - 500 participants
Location: Colorado Springs, Colorado
Bound for Boston Marathon & Half Marathon - Denver
Date: Aug 2, 2026 - Sunday
Size: 1 - 100 participants
Location: Denver, Colorado
Bound for Boston Marathon & Half Marathon - Denver
Date: Aug 2, 2026 - Sunday
Size: 1 - 100 participants
Location: Denver, Colorado
All-Out Runapalooza
Date: Aug 8, 2026 - Saturday
Size: 100 - 500 participants
Location: Arvada, Colorado
Georgetown to Idaho Springs Half Marathon
Date: Aug 8, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Georgetown, Colorado
Westminster Night Trail
Date: Aug 15, 2026 - Saturday
Size: 100 - 500 participants
Location: Westminster, Colorado
Mt. Sneffels Half Marathon, 10K & Kids Fun Run
Date: Aug 15, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Ridgway, Colorado
Boulder Rez Marathon
Date: Aug 15, 2026 - Saturday
Size: 100 - 500 participants
Location: Boulder, Colorado
Med Bow Rail Marathon and Half Marathon
Date: Aug 15, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Laramie, Wyoming
Run for PB&J 5K/10K/13.1 - Denver/Aurora
Date: Aug 15, 2026 - Saturday
Size: 100 - 500 participants
Location: Centennial, Colorado
Erie Half & 5k
Date: Aug 16, 2026 - Sunday
Size: 100 - 500 participants
Location: Erie, Colorado
Staunton Rocks! Trail Marathon & Half
Date: Aug 22, 2026 - Saturday
Size: 100 - 500 participants
Location: Jefferson County, Colorado
Byers Peak Stampede
Date: Aug 22, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Grand County, Colorado
Arrowhead Half Marathon & 5K
Date: Aug 22, 2026 - Saturday
Size: 100 - 500 participants
Location: Edwards, Colorado
Pioneer Prairie Dog Half Marathon 10k & 5k
Date: Aug 23, 2026 - Sunday
Size: 100 - 500 participants
Location: Westminster, Colorado
Sloth Run 5K/10K/13.1 - Denver/Aurora
Date: Aug 29, 2026 - Saturday
Size: 100 - 500 participants
Location: Centennial, Colorado
Golden Harvest Half Marathon, 5k & 10k - Denver
Date: Sep 5, 2026 - Saturday
Size: 100 - 500 participants
Location: Westminster, Colorado
Golden Harvest Half Marathon, 5k & 10k - Colorado Springs
Date: Sep 6, 2026 - Sunday
Size: 100 - 500 participants
Location: Colorado Springs, Colorado
Labor Day Half Marathon, 10K and 5K
Date: Sep 7, 2026 - Monday
Size: 500 - 1,000 participants
Location: Parker, Colorado
Black Squirrel Half
Date: Sep 12, 2026 - Saturday
Size: 100 - 500 participants
Location: Bellvue, Colorado
Snow Mtn Ranch Trail Festival
Date: Sep 12, 2026 - Saturday
Size: 100 - 500 participants
Location: Grand County, Colorado
Ned Ned Trail Fest
Date: Sep 12, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Nederland, Colorado
Snow Mountain Ranch Trail Running Festival
Date: Sep 12, 2026 - Saturday
Size: 100 - 500 participants
Location: Grand Lake, Colorado
Ned Ned Half Marathon
Date: Sep 12, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Nederland, Colorado
National Chocolate Day Run for Chocolates 5K/10K/13.1 - Denver/Aurora
Date: Sep 12, 2026 - Saturday
Size: 100 - 500 participants
Location: Centennial, Colorado
Nun Run
Date: Sep 13, 2026 - Sunday
Size: 500 - 1,000 participants
Location: Centennial, Colorado
Great Bison Shuffle
Date: Sep, 2026 (TBD)
Size: 100 - 500 participants
Location: Cheyenne, Wyoming
All-Out Fallfest
Date: Sep 19, 2026 - Saturday
Size: 100 - 500 participants
Location: Westminster, Colorado
Beulah Challenge
Date: Sep 19, 2026 - Saturday
Size: 100 - 500 participants
Location: Beulah, Colorado
Autumn Run
Date: Sep 19, 2026 - Saturday
Size: 100 - 500 participants
Location: Buena Vista, Colorado
Fall Equinox Marathon, Half Marathon & 5 Mile
Date: Sep 20, 2026 - Sunday
Size: 100 - 500 participants
Location: Fort Collins, Colorado
Red Feather Trail Jamboree
Date: Sep 25-27, 2026 - Friday to Sunday
Size: 100 - 500 participants
Location: Goodell Corner, Colorado
Monument Marathon
Date: Sep 26, 2026 - Saturday
Size: 100 - 500 participants
Location: Gering, Nebraska
Wild Wahatoya Runs
Get 10% Off - Use Code RUNGUIDE10
Date: Sep 26, 2026 - Saturday
Size: 100 - 500 participants
Location: La Veta, Colorado
Oktoberfest Run 5K/10K/13.1 - Denver/Aurora
Date: Sep 26, 2026 - Saturday
Size: 100 - 500 participants
Location: Centennial, Colorado
Boulderthon: Boulder Marathon
Date: Sep 27, 2026 - Sunday
Size: 10,000+ participants
Location: Boulder, Colorado
Mainly Marathons Center of the Nation Series - Day 1
Date: Sep 28, 2026 - Monday
Size: 1 - 100 participants
Location: Cheyenne, Wyoming
Colorado Springs Marathon, Half, 5K, and Kids K
Date: Oct 3, 2026 - Saturday
Size: 1,000 - 5,000 participants
Location: Colorado Springs, Colorado
The Bear Chase Trail Races
Date: Oct 3-4, 2026 - Saturday to Sunday
Size: 100 - 500 participants
Location: Lakewood, Colorado
Spooky Sprint - Denver
Date: Oct 3, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Littleton, Colorado
Rim to Rim Royal Gorge Race
Date: Oct 3, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Fremont County, Colorado
Windsor Marathon, Half Marathon, 10k & 5k
Date: Oct 4, 2026 - Sunday
Size: 500 - 1,000 participants
Location: Windsor, Colorado
Run for Beer - New Belgium Brewing Half Marathon & 5k
Date: Oct 4, 2026 - Sunday
Size: 100 - 500 participants
Location: Severance, Colorado
