Accessible only by car. All of 13 turns in 77 miles. You will probably see fewer cars than turns.
Steep, with sections of unpaved roads. Ride too long for mtn bike: road bike with 25m or greater tires or cyclocross. Stroke of genius route of John Z. Food/fluids available on 47/Frost Valley Rd, on the right, just before Rt 28 at mile 34. Possible food/fluid at Beaverkill.
Remote and difficult to access, this route is well worth the effort. But leave enough time to complete the ride in daylight.