Allaire State Park is probably best known for its historic 19th-century iron making town, Allaire Village, and its antique steam trains on the Pine Creek Railroad. The Manasquan River, which winds through the park, attracts canoeists and fishermen. The rivers floodplain provides habitat for over 200 species of wildflowers, trees and plants as well as habitat for birds and other wildlife. Hikers, mountain bikers and horseback riders enjoy the many trails in the park.
We did the Green trail, it is a well cut out trail, marker's do lack here and there though. It's well kept, minus the trash from (dirty) people on the highway as you cross under I-195. Also, throughout almost the entire trail you can hear cars nearby or in the distance, so don't expect to be getting too far away from civilization and into nature in this park. Very easy as for elevation changes (not much at all), paths are cleared out well too. We went during a wine festival and got hit for $5 parking fee, just as a heads up, that also attributed to the noise levels. The sign's along the trail are nice, explaining some of the local trees in the area.