Arm Wrestling
As near as we can tell, most professional arm wrestling events tend to take place in the rugged spaces of the American West. That shouldn’t be too surprising given the sport’s inherently macho reputation. There’s a complete list of professional arm wrestling events at the World of Arm Wrestling site and the videos are pretty fun to watch.
If you’re looking for something really extreme, check out XARM a combination of mixed martial arts and arm wrestling. It’s the brain child of the same guy who started, and sold off, the UFC. Competitors can punch and kick each other in events that are described as, “the roughest three minutes in sports.”