Nyack Beach State Park boasts 61 acres of riverfront along the Hudson in Rockland County. The most popular activities are picnicking, hiking, bicycling and fishing. Trails are open for cross-country skiing in winter.
Calogero Z. on Nyack Trail
So, this is a 5 mile path, there are parts that are paved and others are gravel. I wouldn't consider this moderate skill, however, there are other paths you can take which will take it up to moderate level. Overall nice experience, as you travel with the cliffs on one side and the Hudson River on the other.
I hiked this trail today because it was close to the city. The noise from 9W was clear even on the top of Hook Mountain. The trail needs to be cleaned, there was a lot of trash: plastic bottles, paper, tissue etc. Trail is well marked and well travelled. There were several fire pits scarring the summit. 360 view at the top is nice but the the front country is still too obvious with buildings, roads and even the Freedom Tower viewable in the distance on a clear day.