Started at Prospect Street boat launch and road north. First mile or two of trail is wide and gravel with potholes. Nice scenery next to river. I'd score this part of the trail a 3. From mile 2 to 3 the trail is still wide but mostly grass with two dirt tracks (a car width apart). Grass is about 8 to 12" tall. Hard to see some bumps and defects. I'd score this part of the trail a 2. From mile 3.2 to the bridge at mile 4.4 (all distances from Prospect Street) boat launch the trail is in poor condition and a single track. I'd score this a 1. The bridge is the remnant of an impressive structure. The steel is rusty but in good shape. The timbers are rotting but for those not intimidated they can be walked. It's a shame the bridge isn't being saved for rail trail users. This is a dead end. I wanted to get back on to Route 119. I needed to go back 1.2 miles to find a poor quality side trail that dumped me out behind the Sunoco gas station.
The scenery on the ride was the best for the first 2 miles of the trip. After that, in general, you are inland and not looking to the side. Your focus is on navigating the trail.

We just rode this trail for the first time and we will certainly be back. Amazing views, paved surface, and plenty of opportunities to stop and sit. The only improvement I would suggest would be to add mile markers.

Easy parking. Short, flat straight ride along the water. Very exposed, not great for a hot day.

Per the advice of the other reviewers, we started from Schodack. We parked at the SEFCU right off the I90 exit for Schodack (if heading from west take right off exit). There is gas station/Dunkin’ Donuts right next to the exit and the SEFCU is right next to that. This way we avoided on road sections in East Greenbush. There are some hills between Schodack and Nassau but they weren’t terrible. After Nassau the trail to Kinderhook was much easier (aka flatter). We didn’t go all the way to Kinderhook but I’m looking forward to that another day. Beautiful trail.

Easy access and very flat and straight. Nice trail to cycle for couples and families.

This beautiful trail runs about 12.5 miles up to Adams, along wetlands, lakes and river! Wildlife abundant! So excited that is it being expanded!

Rode the 25 mile stretch (50 miles RT) between Nasau Lake and Hudson. Nicely maintained and signed trail. Some stretches sharing the road, but in most cases, very easy to navigate! Many historical markers throughout that explain the rich history of this line and area!

We finished this part of trail on June 18. All paved. The newest section had interesting concrete panels for bridge decks. Good mix of open and wooded areas helpful on 80 degree day. Great Scenery. Very flat. Would suggest some added signage inside state park where road is used. Also at north end of park no signage to indicate how to get to Hillsdale section.

Rode today with my wife and adult son. Beautiful day, and trail is excellent.