This has been revised as all access to Ringwood directly from NY State is now deemed illegal due to private property concerns.
The single track is quite rideable, but you will either need to keep an eye open for changing trail markings or follow your prompts on your GPS device. But understand that the places the trail marking change on the map are approximate.
Water is in restrooms at Skylands Manor area on map.
New Jersey Transit from Hoboken on the Main/Bergen County line to Sloatsburg. Note that trains run infrequently. If you return late or early, the next station option for hourly service is Suffern, not a bike friendly ride down Rt 17.
Ringwood has a vast array of trails and roads for all levels of cycling.
You will need a map or apps on your phone such as Trailforks when you explore Ringwood as trails are not well marked. A GPS device is ideal as not all trails are on maps. In fact, this single track entry is not yet on either Trailforks or the Avenza app maps; it is that new. So you will not find parts of this route on the Ringwood map download.
This area is surprisingly easy to access from Manhattan as the PATH train or Waterway ferries take you directly to the Hoboken trail terminal.