21st Annual Tussey mOUnTaiNBACK 50 Mile Relay and Ultramarathon. Certified single-loop course on scenic, mostly gravel roads in Rothrock State Forest. Recreational and competitive runners welcome. Relay teams of 2-8 runners rotate through 12 legs of course. Pre-race dinner, 11 ultramarathon aid stations, spectator venues, post-race party, awards. Easy access by air and interstate. For complete details, visit: http://www.tusseymountainback.com.