With rain forecast through the night, tomorrow’s bike race on Randall’s Island will be an especially muddy affair. That’s partly the point of Tracklocross: First Mud Part II, an alley-cat style race that takes riders through the roughest and wettest terrain on the island. Competitors are required to race a bike with a fixed gear or narrow-slick tires, and guaranteeing some spectacular crashes, there’s a special category for anyone riding a track-legal bike.

Photo by jonnystiles