Hiking can be enjoyed year-round from certain areas adjacent to the Marsh Causeway (SR615).

Providing a scenic journey through a swamp-like habitat, the Great Marsh Trail (0.3 mile loop) goes through the habitat and is home to a variety of songbirds, small mammals, reptiles, and other creatures.
From March 15 to October 14, the area beyond the dike gate at the end of Mackay Island Road is also open. This area provides bicycling and hiking opportunities on seven miles of dikes around the refuge impoundments (pools). Whitetail deer, waterfowl, wading birds, and many other species may be encountered.