You can pick up the South County Trailway in Westchester from VanCortland Park. Take the 1 train to 242nd St. That will connect you with the North County which can take you all the way to Brewster NY. From there you can return to Grand Central using Metro North. About 60 miles. If you don't want to take it to the end there are other places you can bail out and take metro north
http://www.nycbikemaps.com/maps/nort...ways-bike-map/
Last edited by dendawg; 06-11-12 at 09:36 PM.