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•95 upcoming races

Half marathons across
Denver–Boulder.

Every upcoming half marathons in Denver–Boulder — dates, start lines and registration, with the crews to train with listed right beside them.

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All races955K7210K17Half Marathon15Marathon4

September

3 races
Fort CollinsFall EquinoxHalf MarathonOther distancesBoulderGirls on the Run Rockies Boulderthon SoleMates10KHalf MarathonMarathonBoulderRunning for Children's Rights to Both Parents - 9 of 50 Half Marathons in 50 States - ColoradoHalf Marathon

October

1 race
LittletonSpooky Sprint - Denver5K10KHalf MarathonOther distances

November

2 races
LittletonTurkey Trails- Denver5K10KHalf MarathonOther distancesAuroraSalute to Veterans 5K/10K/Half Marathon - Denver5K10KHalf Marathon

January 2027

1 race
DenverTime Travel Half-Marathon/5K/10K - Denver5K10KHalf MarathonOther distances

March 2027

1 race
DenverTime to Paddy 5K/10K & Lucky 13.1 13.1 - Denver5K10KHalf MarathonOther distances

April 2027

3 races
LittletonPlatte River Half-Marathon, Relay & 5k5KHalf MarathonFort CollinsHorsetooth Half Marathon - Presented by Fort Collins ConnexionHalf MarathonDenverDoNot Stop Half Marathon/5K/10K - Denver5K10KHalf MarathonOther distances

May 2027

2 races
Fort CollinsThe Colorado Marathon5K10KHalf MarathonMarathonDenverHometown Half Marathon/5K/10K - Denver5K10KHalf MarathonOther distances

July 2027

1 race
DenverHeatwave Half Marathon/5K/10K - Denver5K10KHalf MarathonOther distancesRegistration closed

August 2027

1 race
DenverBound for Boston Marathon & Half Marathon - DenverHalf MarathonMarathonRegistration closed

Race listings sync daily from RunSignup, and are not individually verified the way RunVibe's club listings are.

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