For the casual bicycling weekender, or for the serious cycling enthusiast, Key Biscayne is the ideal location to ride a bicycle.  Bikes, scooters, roller blades, and golf carts are the preferred method of transportation around the island.  There are fifteen miles of paved bike paths winding throughout the island paradise of Key Biscayne and it is possible to ride safely with children for the entire day.

Starting from the middle of the island (where you can rent a bike) your first decision will be the direction you will ride.  To the south is Cape Florida, featuring the Cape Florida Lighthouse with bike paths along Biscayne Bay and through Bill Baggs State Park.

To the north is the bike path to Crandon Park where you can ride your bike along a path that is right on one of the most beautiful beaches in the world.  Both directions are highly recommended and can easily be completed in a day, and usually much less if you are just an average bicycler.. After all, the island of Key Biscayne is only approximately 6 miles long by 2 miles wide.

In the center of Key Biscayne is the Village Green, a 9-acre park with almost half a mile of paved path, perfect for the young and beginner riders. It comes down to time, who is with you, what time of the day you get started, and how much riding you want to do.

Both Cape Florida and Crandon Park are destinations in themselves, and both areas have snack shops and rest rooms at some point along the way.   Wear your swimsuit under your shorts, pack a towel in the bike basket or in a backpack, and take a bike lock (usually provided with the rental) because you are likely to be tempted to stop along the way for a dip in the clear, cool waters surrounding you.

If you ride towards Crandon Park, you may decide that you want to keep riding.  If this is the case, continue to the north end of the park and follow the bike path signs that lead to a bike path cutting through the woods and exiting at Crandon Marina and Sundays on the Bay Restaurant.  Cross the street to the marina side, and from this point you can ride past the charter boats and stop to watch them fillet their catches.  Fresh fish is usually for sale.

Along Virginia Key, ride right along the beach and up and over the “Miami Mountain” (William Powell Bridge).  The old drawbridge is adjacent to the new bridge (just missing the middle), and you can ride your bike along it and watch people fishing from the bridge.  There are no cars, so it is safe for the children here.  (Be sure to wear shoes and watch for stray fish hooks.)  There are limited facilities along Virginia Beach, however there are rest rooms (if you really really really need to go) and lemonade stands.

If you have a bike rack on your vehicle, great places to park your car and stage your ride include Virginia Key, Cape Florida, or Crandon Park. 
For the serious bikers, there are clubs that ride Key Biscayne and beyond almost every weekend.