The Delaware and Raritan Canal State Park is dog-friendly. This popular recreation corridor in New Jersey passes through miles and miles of canal country. Lots of people enjoy canoeing, jogging, hiking, bicycling, fishing and horseback riding in the area. The trail spans 70 miles in total, through fields and forests, perfect for pooches who love the outdoors. Dog owners are reminded to keep their pooch on a leash and to clean up any mess that is left behind.