Half-Marathons in Colorado
Calendar of Half-Marathons in Colorado
4
Races
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Coming soon
Upcoming Half-Marathons in Colorado
Road Running
16 Sat ➜ May 17, 2026Date confirmed
Denver Marathon
Denver(CO)3.11 mi6.21 mi13.11 mi26.22 mi
🏅 World Marathon Majors Qualifiers
+1
🏅 Boston Qualifying Races
Road Running+1Walking
End of June 2026
Slacker Race
Denver(CO)3.73 mi13.11 mi
Road Running
End of September 2026
Boulderthon
Boulder(CO)3.11 mi6.21 mi13.11 mi26.22 mi
Road Running
End of May 2026
Steamboat Marathon
Steamboat Springs(CO)6.21 mi13.11 mi26.22 mi
Should it rain or snow
Schedule of Half-Marathons in Colorado
Quickly find the entire calendar of Half-Marathons in Colorado
May 20262 races
September 20261 race
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