BIKES AND BUSESThe bike scene in Miami has taken off, turning into a giant social gathering of all ages. On the last Friday of every month, bicyclists take to the streets en masse and bike just over a dozen miles (about 17 kilometers) during Miami Critical Mass. If you don't have your own bike, rentals are available.
A popular cycling route is the Rickenbacker Causeway, which connects Miami to the barrier island of Key Biscayne. Ride into Crandon Park for free to visit a two-mile (3.2-kilometer) long beach.
Another alternative to cars in Miami: Check out the free Metromover bus. which makes stops in tourist-friendly areas such as Downtown, Brickell and Bayside.