Colorado
Here's a full listing of races and events in Colorado.
Visit these pages for just marathons, half marathon, 10K or 5K races.
running & multisport races
Aug 16, 2026
LeadvilleAug 22, 2026
LeadvilleAug 22, 2026
TellurideAug 23, 2026
DenverAug 29, 2026
DenverSep 5, 2026
BreckenridgeSep 12, 2026
DenverSep 18, 2026
Steamboat SpringsSep 19, 2026
Colorado SpringsSep 19, 2026
DurangoSep 20, 2026
WellingtonSep 26, 2026
Buena VistaSep 26, 2026
Colorado SpringsSep 26, 2026
Winter ParkSep 27, 2026
LovelandSep 27, 2026
BoulderOct 3, 2026
LovelandOct 3, 2026
DenverOct 10, 2026
Fort CollinsOct 11, 2026
WestminsterOct 17, 2026
DenverOct 17, 2026
LakewoodOct 31, 2026
LovelandNov 21, 2026
ArvadaDec 12, 2026
ThorntonDec 19, 2026
DenverDec 31, 2026
Fort CollinsJan 1, 2027
DenverFeb 6, 2027
Colorado SpringsFeb 13, 2027
ArvadaFeb 28, 2027
Highlands RanchMar 13, 2027
WestminsterMar 28, 2027
DenverApr 4, 2027
DenverApr 10, 2027
FruitaApr 17, 2027
Colorado SpringsApr 18, 2027
Fort Collinsfeatured events
Mt. Spokane Trail Run
Sep 13, 2026
/
Spokane
Hiawatha Fall Trail Run
Sep 26, 2026
/
Taft
Trails to Taps Relay
Oct 11, 2026
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Bellingham
2026 Regatta Run & Walk 5K
Oct 18, 2026
/
Portland
