3 of us did it today from its terminus at Nyack, off Franklin, to Ash. We were on road bikes with tires from 23m to 25m. We had no trouble although we didn't do the southern section from Valentine, in Sparkill, to Ash, which I thought was a bit sketchy a few weeks ago. Also, there is a few patches of loose, deep sand just at the start in Nyack.
I would like to hear from someone who has done the sections from Oak Tree to Valentine and from Valentine to Ash on a road bike to find out if the trail is serviceable. Granted, the conditions were dry and warm, but this is a wonderful way to Nyack which avoids all the brewhaha of Piermont Avenue.