Ongoing

Science Stride 5K

Boulder Reservoir 5275 Reservoir Rd, Boulder

The Science Stride 5k brings together our community for a common cause: Inspiring the next generation of scientists! This event provides an excellent opportunity for everyone who believes in the …

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Expo Park XC

Expo Park 10955 E Exposition Ave,, Aurora

Old school cross-country on grass with creek crossings and bale hurdles. The courses are almost all grass, mostly flat with small undulations. The 3k & 5k races will start with …

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Hoofin’ It Through the Hollows

deKoevend Park 6315 S University Blvd, Centennial

Runners of all ages and abilities, families, and dogs are all welcome to join us for this Halloween celebration!  Dress in your Halloween best for a chance to win prizes for the costume …