Chelsea Piers Fitness is a 150,000-square-foot adult membership sports and fitness club featuring 1/4-mile indoor track, indoor swimming pool, sundecks, basketball courts, indoor sand volleyball court, boxing ring, rock climbing wall, cardio and strength-training equipment. Take a run on the track, a venture up the rock climbing wall, a game on the indoor sand floor volleyball court or a dip in the pool. Work with personal trainers or in a group class to help you reach your fitness goals. And don’t forget to reward yourself for all of that hard work with a visit to the spa.