These crazy-messy obstacle courses look like possibly the most fun ever. The terrain is tough---six kilometres of Ski Martock's hills and trails plus over 15 extra things to climb, jump over and slither through---and every participant is in full swamp monster mode, covered from toenail to earlobe in muck. Mud pits, slides and crawls will keep you doused in a lovely shade of brown while wall-climbs, hurdles, balance beams and backwoods trekking will keep you sweating bullets. It's a no-holds-barred type of race where the winners and the losers will have both mud and huge smiles plastered across their faces. You're welcome to dig in or cheer on, and there's a celebratory Mud Bash to follow with eats, beats and prizes. —Allison Saunders
