The route crosses the river into Far Hills and becomes Peapack Drive as it continues through wooded residential areas a short distance to the west of the Gladstone Branch.

[1][5] CR 512 intersects US 202 and turns northeast to form a concurrency with that route, passing between homes to the northwest and fields to the southeast.

At the Douglas Road intersection, CR 512 enters Bernards Township and heads south through wooded residential areas, making a sharp turn to the east.

The road passes through a mix of wooded neighborhoods and open fields before turning southeast into forested residential areas at the CR 613 junction.

Following this intersection, the route briefly is a divided highway at the entrance to a shopping center before becoming undivided again and passing a mix of homes and businesses.

[1][5] After crossing the Passaic River a second time, CR 512 continues into Berkeley Heights in Union County, becoming Springfield Avenue and passing through business areas with some homes.

In Summit, the road passes more homes before reaching a junction with CR 651, where the route briefly turns southeast onto Morris Avenue before continuing east onto Broad Street into commercial areas.