Run ThisRun ThisBig Sky Marathon
    Event websiteRegister
    Register
    Are you the organizer? Claim this race to manage its page on Run This.Claim
    Big Sky Marathon
    Big Sky Marathon

    Big Sky Marathon

    Date and time

    Sunday, July 11, 2027

    Location

    Varney Bridge Fishing Access Site, Ennis, MT

    Register

    Date and time

    Sunday, July 11, 2027

    Location

    Varney Bridge Fishing Access Site, Ennis, MT

    Going to this race?

    Register

    Add it to your calendar, or register on the host’s site.

    About This Event

    The Big Sky Marathon is a high-altitude, downhill quad-burner that descends the Gravelly mountain range en route to the Blue-Ribbon Madison River. Racers log a total descent of nearly 4,900 feet at finish, and a net descent of over 3,800 feet. The inaugural year was 2015, and the BSM has quickly become our most popular test. Ninety-six percent (96%) of the trek is on unpaved, packed and loose gravel.

    WE HAVE IMPROVED THE COURSE FOR 2027, ELIMINATING THE OUT AND BACK LOOP TO/FROM HIGHWAY 287, AND THAT COURSE IS NOW PUBLIC ON GARMIN: https://connect.garmin.com/app/course/506792996

    And, the half marathon option: https://connect.garmin.com/app/course/506794019

    Or, supersize your day with 50K: https://connect.garmin.com/app/course/507504785

    Prizes are awarded to the first and second place male and female finishers. Please stay for the after-party at Varney Bridge while Ultra 50K, full marathon, and half marathon registrants all commiserate together over local brews and bites.

    Community Wall

    Open the wall →
    No posts yet — start the conversation →

    Distances

    Marathon

    Half marathon

    31.1 mi