Great easy walk. I'd highly suggest walking to where it meets the ocean. Watch out for the free head flies though- they were brutal.

The Wellfleet Audubon offers a modern and interesting visitor center and a variety of mostly level treks covering pretty much the whole sanctuary. Lots of woods, a freshwater mini-river which feeds into the marsh, and a boardwalk leading to an outer Sanctuary beach (however, at high tide the boardwalk is submerged). The visitor center posts the times of high tide, so you can plan to avoid being stranded.

A very beautiful stroll along a well maintained trail/path. I enjoyed walking on the boardwalk along the path.