A Princeton University ID card is required in order to access Dillon Gym. Princeton University Students have this access automatically activated on their ID's; anyone else can receive this access by purchasing a gym membership. Pricing and purchase instructions can be found here.
Access to Dillon Gym includes access to Stephens Fitness Center, the basketball courts, the squash courts, and locker rooms. In addition, a gym membership is required in order to register for most group fitness and instructional classes that take place in Dillon Gym.