I did the 50M in DC last year and it was a clusterf*** of errors. The course was mismarked, over half the runners dropped out due to heat exhaustion and not enough water, and i am convinced i ran close to 60 miles, lol. I did finish though. I got 1st AG and 4th female cause it was survival of the fittest. There is a thread in the Extreme Running forum about the NY race with discussion of the course. Overall, i would go back, hoping that they fixed the problems. Check out the details on the packet pickup, which is the day before in Manhattan.