Here are some links to some great sites for cycling in the New York City and the surrounding area.

NYC Cycling Info

NYC Dept. of Transportation Bicycle Program

NYC Dept. of Parks & Recreation

Transportation Alternatives

Trek Travel

New York Cycling Club

Westchester Cycle Club

Bike New York

Five Boro Bike Club - Montauk Century

East Coast Greenway

National Center for Bicycling and Walking