I did the yellow trail and it was well marked, as long as you were paying attention. Nice gentle ups and downs and I tracked the trail at exactly 3.5 miles. Mostly in the woods with a couple nice views at higher points, I did not see the waterfall mentioned in the description though. Appreciated the clean port-o-potty at the trailhead! You can hear highway noise the majority of the hike. I did not see a single other person, which was astounding considering the proximity to NYC on a beautiful Saturday in May.