Online registration may not be allowed for all activities. To enroll into a group exercise class, please reserve your spot via our mobile app [https://ymcagbw.org/mobileapp#faq-question-949250480]. Please contact us during regular business hours for registration information. Please be courteous of other swimmers and choose a lane that best fits your speed or age. Circle swimming is required when two or more swimmers are in one lane. Category Schedules Location Indoor Pool - B at Upper Main Line Branch