Bluebikes is the city’s public bike-sharing program. Comprising 3,500 bikes spread out over 330 stations throughout Boston, Brookline, Cambridge, Everett and Somerville, Bluebikes makes it easy to find and rent a bike whenever and wherever you need one – all you need to do is download the app, and the first 45 minutes of each ride is free if you sign up. Looking to rent a bike near a university? Bluebikes has rental stations near Harvard, the Massachusetts Institute of Technology, Boston College and Boston University. Pro tip: You can buy a single pass for a 30-minute ride, a 24-hour pass or an annual membership.