Skip to main content
Tough Mountain Logo

Page Not Found

Unfortunately, the page you were trying to visit does not exist.

Back to Home

TMC? MMC? WTF?

Learn More. Then Sign Up Anyway.

  • An athlete with goggled climbing up the hill at the Tough Mountain Challenge at Sunday River.
    Walls, Hills, Hurt

    Tough Mountain Challenge

    Want a prime heat? Better move—early spots go faster than your grip on a muddy wall.

    Register Now Need More Info?
  • A young child competing in the Mini Mountain Challenge
    Let the kids loose

    Mini Mountain Challenge

    Registration for 2026 opening in the fall!

    Mini Mountain
  • A group of athletes finishing the line of the Tough Mountain Challenge
    All the Dirty Details

    About The Race

    Need more convincing? Okay, here are some more details.

    Don't Chicken Out
© Boyne Resorts 2025