May Races in Colorado
Event Category
Click Here to find out what Classic, Multisport, and Variety mean.
To narrow your search by a distance or event type, you will need to select Classic, Multisport, or Variety first.
To narrow your search by a distance or event type, you will need to select Classic, Multisport, or Variety first.
City Location
61. Colorado Brewery Running Series
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May 18, 2024Saturday
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5K run
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Lafayette, CO
Boulder County, CO
62. Denver Colfax Marathon
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May 18, 2024Saturday
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5K run
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Boston Marathon Qualifier
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Denver, CO
Denver County, CO
63. Endure Trail Runs
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May 18, 2024Saturday
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24H, 12H, 13.1M, 10K trail run
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Divide, CO
Teller County, CO
64. Girls on the Run 5K
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May 18, 2024Saturday
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5K run
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Denver, CO
Denver County, CO
65. Habitat Archuleta's 15 Homes in 5K
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May 18, 2024Saturday
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5K run
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Pagosa Springs, CO
Archuleta County, CO
66. Healthy Kids Running Series - Fort Collins
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May 18, 2024Saturday
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kids run
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Fort Collins, CO
Larimer County, CO
67. Memorial Day Run & March
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May 18, 2024Saturday
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30K, 10K, 5K run
Virtual OptionMore Information
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Castle Rock, CO
Douglas County, CO
68. Ordinary Mortals Triathlon
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May 18, 2025Sunday
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sprint triathlon | sprint triathlon relay
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Pueblo, CO
Pueblo County, CO
69. Ram Party
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May 18, 2024Saturday
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54M, 50K trail run
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Colorado Springs, CO
El Paso County, CO
70. Run to the Shrine
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May 18, 2024Saturday
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4M run
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Colorado Springs, CO
El Paso County, CO
71. South Boulder Creek parkrun
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May 18, 2024Saturday
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5K run
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Boulder, CO
Boulder County, CO
72. Spirit Challenge
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May 18, 2024Saturday
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10K, 5K run | kids run
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Steamboat Springs, CO
Routt County, CO
73. Tails on the Trail
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May 18, 2024Saturday
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5K run
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Salida, CO
Chaffee County, CO
74. Denver Colfax Marathon
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May 19, 2024Sunday
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26.2M, 13.1M, 10M run | 26.2M relay
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Boston Marathon Qualifier
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Denver, CO
Denver County, CO
75. Healing Warriors Program 5K Fun Run
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May 19, 2024Sunday
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5K run
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Fort Collins, CO
Larimer County, CO
76. Healthy Kids Running Series - Erie
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TBD????
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kids run
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Erie, CO
Weld County, CO
77. Healthy Kids Running Series - Denver
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May 19, 2024Sunday
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kids run
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Denver, CO
Denver County, CO
78. Healthy Kids Running Series - Aurora
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May 19, 2024Sunday
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kids run
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Aurora, CO
Arapahoe County, CO
79. Miles for Smiles 5K
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May 19, 2024Sunday
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5K run | kids run
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Arvada, CO
Jefferson County, CO
80. Ram Party
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May 19, 2024Sunday
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26.2M, 13.1M, 9M, 5K trail run
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Colorado Springs, CO
El Paso County, CO
For the love of all that Is good And moisture wicking...
Though we Try To be accurate And On top Of things... Race details can change When we aren't lookin. And once in a while we simply make a mistake.
ALWAYS visit the race's website for the most complete and accurate race information.
ALWAYS visit the race's website for the most complete and accurate race information.