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    5K Races in Thornton, CO

    4 upcoming 5K races in Thornton. Run This events are listed first.

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    DistanceAll5K
    Nearby citiesDenverColorado SpringsCentennialFort CollinsArvadaLittletonAuroraWestminsterPuebloBoulderGrand JunctionDurango

    4 races

    Sat, Oct 3, 2026

    I Can 5k

    Thornton, CO

    Outside5K

    Sat, Oct 31, 2026

    I Ain't Scared (of 5k)

    Thornton, CO

    Outside5K

    Sat, Dec 12, 2026

    WinterFest 5k & Fun Run

    Thornton, CO

    Outside5K1200 m

    Sat, Jun 19, 2027

    Unicorn 5k (North)

    Thornton, CO

    Outside5K1000 m

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