Complete with 10 obstacles, this race spans the distance of a measly 5k, however do not be fooled. It's the nature of the obstacles that give this race its name. We're talking "mountain" as in "tough mountain" featuring some of the most demanding and unique terrain at Sunday River. Think you have what it takes? We'll see about that...after we will all celebrate slopeside at South Ridge Lodge with music, good drinks and lots of excellent stories.

Register now! Be the first to try out Hurricane Alley, Parks Pipe and Pain, or the Slip Slide and Die! Log onto www.sundayriver.com for more info and print out your registration form.