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Marathons Near Colorado
Showing the next 50 runs that match your filters
Featured
Samson's Revenge Trail Race
Mostly fast single track course!
Date: May 23, 2026 - Saturday
Size: 100 - 500 participants
Location: Estes Park, Colorado
Featured
Bigfoot Half Marathon & 5K
Live music, music + FREE festival!
Date: Apr 25, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Estes Park, Colorado
Cedro Peak Ultra Marathon & Half Marathon
Date: Apr 18, 2026 - Saturday
Size: 100 - 500 participants
Location: Albuquerque, New Mexico
Thelma and Louise Marathon, Half Marathon and 15K
Date: Apr 25, 2026 - Saturday
Size: 100 - 500 participants
Location: Moab, Utah
Shiprock Marathon
Date: May 1-2, 2026 - Friday to Saturday
Size: 1,000 - 5,000 participants
Location: Shiprock, New Mexico
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Colorado Marathon
Date: May 3, 2026 - Sunday
Size: 1,000 - 5,000 participants
Location: Fort Collins, Colorado
Valkyrie Trail Race
Date: May 9, 2026 - Saturday
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
Spirit Trail Run
Date: May 24, 2026 - Sunday
Size: 100 - 500 participants
Location: Buena Vista, Colorado
Deadwood-Mickelson Trail Marathon
Date: Jun 6-7, 2026 - Saturday to Sunday
Size: 1,000 - 5,000 participants
Location: Deadwood, South Dakota
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
Estes Park Marathon
Date: Jun 20-21, 2026 - Saturday to Sunday
Size: 500 - 1,000 participants
Location: Estes Park, Colorado
Leadville Trail Marathon & Heavy Half
Date: Jun 27, 2026 - Saturday
Size: 1,000 - 5,000 participants
Location: Leadville, Colorado
Silverton Alpine Runs
Date: Jul 18, 2026 - Saturday
Size: 100 - 500 participants
Location: Silverton, Colorado
Aspen Valley Marathon
Date: Jul 25, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Aspen, Colorado
Aspen Backcountry
Date: Aug 1, 2026 - Saturday
Size: 100 - 500 participants
Location: Aspen, Colorado
Bound for Boston Marathon & Half Marathon - Denver
Date: Aug 2, 2026 - Sunday
Size: 1 - 100 participants
Location: Denver, 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 With The Horses Marathon
Date: Aug 15, 2026 - Saturday
Size: 100 - 500 participants
Location: Green River, Wyoming
Leading Ladies & Dakota Spirit Marathon, Half Marathon, Relay & 10K
Date: Aug 22-23, 2026 - Saturday to Sunday
Size: 100 - 500 participants
Location: Spearfish, South Dakota
Staunton Rocks! Trail Marathon & Half
Date: Aug 22, 2026 - Saturday
Size: 100 - 500 participants
Location: Jefferson County, Colorado
Caprock Night Runs
Date: Sep, 2026 (TBD)
Size: 1 - 100 participants
Location: Quitaque, Texas
Ruidoso Runfest
Date: Sep 18-19, 2026 - Friday to Saturday
Size: 500 - 1,000 participants
Location: Ruidoso, New Mexico
Pikes Peak Marathon + Ascent
Date: Sep 19-20, 2026 - Saturday to Sunday
Size: 1,000 - 5,000 participants
Location: Manitou Springs, Colorado
Fall Equinox Marathon, Half Marathon & 5 Mile
Date: Sep 20, 2026 - Sunday
Size: 100 - 500 participants
Location: Fort Collins, Colorado
Monument Marathon
Date: Sep 26, 2026 - Saturday
Size: 100 - 500 participants
Location: Gering, Nebraska
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
Mainly Marathons Center of the Nation Series - Day 2
Date: Sep 29, 2026 - Tuesday
Size: 1 - 100 participants
Location: Sterling, Colorado
Mainly Marathons Center of the Nation Series - Day 3
Date: Sep 30, 2026 - Wednesday
Size: 1 - 100 participants
Location: Chadron, Nebraska
Mainly Marathons Center of the Nation Series - Day 4
Date: Oct 1, 2026 - Thursday
Size: 1 - 100 participants
Location: Belle Fourche, South Dakota
Colorado Springs Marathon, Half, 5K, and Kids K
Date: Oct 3, 2026 - Saturday
Size: 1,000 - 5,000 participants
Location: Colorado Springs, Colorado
Run Crazy Horse Marathon
Date: Oct 3-4, 2026 - Saturday to Sunday
Size: 500 - 1,000 participants
Location: Hill City, South Dakota
Arches Marathon and Half
Date: Oct 3, 2026 - Saturday
Size: 100 - 500 participants
Location: Moab, Utah
West Elk Challenge Trail Marathon
Date: Oct 3, 2026 - Saturday
Size: 100 - 500 participants
Location: Delta County, Colorado
Windsor Marathon, Half Marathon, 10k & 5k
Date: Oct 4, 2026 - Sunday
Size: 500 - 1,000 participants
Location: Windsor, Colorado
Long View Marathon & Half Marathon
Date: Oct 10, 2026 - Saturday
Size: 100 - 500 participants
Location: Fort Collins, Colorado
Holloman Ace of Races
Date: Oct 10, 2026 - Saturday
Size: 1 - 100 participants
Location: Otero County, New Mexico
Breckenridge Road Marathon
Date: Oct 10-11, 2026 - Saturday to Sunday
Size: 100 - 500 participants
Location: Breckenridge, Colorado
Durango Marathon
Date: Oct 11, 2026 - Sunday
Size: 500 - 1,000 participants
Location: Durango, Colorado
Blue Sky Trail Marathon
Date: Oct 17-18, 2026 - Saturday to Sunday
Size: 100 - 500 participants
Location: Fort Collins, Colorado
Duke City Marathon
Date: Oct 18, 2026 - Sunday
Size: 1,000 - 5,000 participants
Location: Albuquerque, New Mexico
Day of the Dead Series
Date: Oct 24-25, 2026 - Saturday to Sunday
Size: 100 - 500 participants
Location: Las Cruces, New Mexico
Canyonlands Ultra
Date: Oct 24, 2026 - Saturday
Size: 100 - 500 participants
Location: San Juan County, Utah
Day of the Dead - Day 1 & Day 2
Date: Oct 24-25, 2026 - Saturday to Sunday
Size: 100 - 500 participants
Location: Las Cruces, New Mexico
Lubbock Marathon
Date: Oct 25, 2026 - Sunday
Size: 100 - 500 participants
Location: Lubbock, Texas
Rim Rock Marathon & Half Marathon
Date: Nov 1, 2026 - Sunday
Size: 100 - 500 participants
Location: Fruita, Colorado
Bears Ears Marathon
Date: Nov 7, 2026 - Saturday
Size: 100 - 500 participants
Location: Blanding, Utah
Mainly Marathons Southwest Series - Day 1
Date: Nov 8, 2026 - Sunday
Size: 1 - 100 participants
Location: Farmington, New Mexico
Mainly Marathons Southwest Series - Day 2
Date: Nov 9, 2026 - Monday
Size: 1 - 100 participants
Location: Durango, Colorado
