Brooklyn – Park Slope
151 Seventh Ave between Carroll St and Garfield Pl
Neatly organized to outfit runners, cyclists and swimmers alike, this depot offers NuMetrex heart-rate-sensing sports bras ($50), Craft Prozero's insulating, second-skin-like shirts ($50) and BOB Revolution strollers ($359) for those overextended parents who run their kids around the park. Beginning joggers, half-marathoners and triathletes can also enroll in training sessions ($145--$445).
Find more shops at Time Out New York.