July 27, 2024 Based at Sunday River Ski Resort in Western Maine, Tough Mountain Challenge is an adventure obstacle race that combines alpine terrain with natural and manmade obstacles.

The Event

At approximately 5k in length it may look like an easy hike, but you'll change your mind as soon as you take off running up a mountain under an arsenal of snowguns or scrambling through the mud. Tough Mountain Challenge is a timed event, but it's not about whether you finish first or last—it's about testing yourself and pushing your limits, then celebrating your accomplishment once you cross the finish line. Plus, Tough Mountain Challenge limits the number of competitors in the event and in each heat, so you won't feel crowded or rushed on the course. It might be the most fun you'll ever have while also considering crying.

Check out our Frequently Asked Questions for more information!


2024 Schedule 


Early Check-In
Mahoosuc Room @ South Ridge Lodge, 4-8PM

Get your race packet and swag the day before for a stress-free race day. 

Big Ass Bash
Outside @ South Ridge Lodge, 5-9PM

Once you've grabbed your race packet, head outside and join the party! From 5-9PM, DeeRock and SAYO will spin today's hits and the classics we all love.


South Ridge Lodge, 7AM

Competitors can start checking in at 7AM, and we recommend that you get there at least an hour before your heat to get your race packet and swag. 

First Heat of Tough Mountain Challenge
Slopeside at South Ridge, 8AM

Heats will run on schedule, weather permitting, until the last one goes out in the early afternoon.


Sunday River offers two full-service hotels, complete with heated outdoor pools, restaurants, and health clubs, as well a comfortable and budget-friendly inn -- all located right at the resort and just minutes from the event venue. Book lodging online or call 800-543-2754.