Pinckney Island National Wildlife Refuge near Hilton Head offers more than 14 miles of hiking and biking trails with beautiful views of lakes, marshes, wildlife and more. Trail maps available at the parking lot kiosk. There are 14 miles of hiking and biking trails. The main trail is 3.5 miles one way. Pinckney is popular for birding and opportunities for photography – with hundreds of expansive oaks dripping with Spanish moss and the marsh in the background. The wildflowers in the spring are spectacular.