Citi Bike is New York City’s bike share system, and the largest in the nation. Citi Bike launched in May 2013 and has become ... an essential part of our transportation network. It's fun, efficient and affordable – not to mention healthy and good for the environment. Citi Bike is available for use by locals and visitors 24 hours/day, 7 days/week, 365 days/year, and riders have access to thousands of bikes at over 1,000 stations across Manhattan, Brooklyn, Queens, The Bronx and Jersey City. read more