Why it’s harder than it seems: This series of three 12-foot wooden walls is impossible to do alone and designed with one focus in mind: teamwork. Sure, the climb itself will be tough, but don’t underestimate the toll of assisting your fellow Mudders up after you. Reveling in your successful ascent doesn’t mean you’re done, either. Think carefully about your exit, which can be just as challenging.
Completion rate: Kombol says helping four people over the wall reduces your own ability to successfully complete the obstacle by about 50%.