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    December ultramarathons in Utah, United States

    December
    United States
    Utah

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    2 races

    Capstone 50K

    Capstone 50K

    Dec 5, 2026 (Sat)

    St. George, Utah, United States

    Scenic 10k desert loop near St. George with alternating directions, varied distances, and supportive trail running atmosphere

    50K
    Last One Standing Ultra Marathon

    Last One Standing Ultra Marathon

    Dec 11, 2026 (Fri)

    St. George, Utah, United States

    6-mile loop course from Confluence Park with 1.5-hour cutoff per loop, up to 17 loops for 102 miles, progressive elimination format

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    Showing 1 - 2 of 2 events