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    • Home
    • A wicked dirty 5k race with tough obstacles and even tougher competitors
    • About
    • Tough Mountain challenge is a 3+-mile obstacle race on the slopes of Sunday River in Western Maine
    • Registration
    • Register for the Tough Mountain Challenge, a 4-mi obstacle race in the mountains of Western Maine at Sunday River Resort.
    • The Course
    • See all 20 obstacles on the Tough Mountain Challenge Course.
    • FAQ
    • Everything you need to know about the Tough Mountain Challenge
    • Mini Mountain
    • A kid-sized version of the Tough Mountain Challenge for ages 4-12.
    • Sponsors
    • Thank you to the Tough Mountain Challenge Sponsors