If you haven't been to Central Park before and love bike riding, rent a bike and explore the park yourself. I found this company on Google - you can choose bike rentals or bike tours, price is good and the service is very nice.
Central Park Bike Rent
www.centralparkbikerent.com
158 West 56th Street New York, NY 10019
1-917-892-9279
www.centralparkbikerent.com
Updates
Is this your business?
250 West 49th Street New York,NY 10019
(Between 8th Ave.& Broadway)
1-347-713-0013