There are miles of bike trails around the island, and you could spend days exploring them all. So f you want to hit the roads by bike, consider a few of the most popular routes. Surfside Beach is an easy and flat 3.5-mile trip to a great family beach with waves, lifeguards, and snacks. Dionis is a short but slightly hillier ride that takes you to another great beach. Adventurous riders prefer the ride to Sconset, which is a 19-mile round trip that takes you to the most popular destination on the island. Surfers load up their boards and ride the four miles to Cisco Beach, where waves and a local brewery are the ultimate reward.