The Tour de Brooklyn is a leisurely paced, 18-mile bike tour along a relatively flat route that starts May 25, 2008 at 9:00am.
Registration is free and required. [there's a 2000 person limit on the ride]
Day-of Event Registration will be available at New Dock St. and Water St. in Dumbo from 8-9 am on Sunday, [...]

The 44th annual Montauk Century will roll on May 18, 2008. Choose from 65, 100, and 145 mile routes on Long Island’s beautiful South Shore. Check-in points are at Penn Station and the LIRR station in Babylon. All routes end in Montauk. Transportation is available to get you and your bike home. official [...]

Photos from the 2008 New York City Five Boro Bike Tour:
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The Five Boro Bike Tour, the largest recreational cycling event in the United States, is scheduled for Sunday, May 4th 2008. Every year on the first Sunday of May, over 30,000 riders participate in the 42 mile ride around New York City.

Join Transportation Alternatives for the first ever Tour de Queens. Enjoy a leisurely 20 mile ride around the perimeter of Western Queens and see all the sights. There is a limit of 500 riders and pre-registration is required