Stop at the Cape Cod National Seashore’s Salt Pond Visitor Center in Eastham, where you can learn about the geological and cultural history of Cape Cod. The 25-mile trail unfurls south from Lecount Hollow Road in Wellfleet, past marshes and ponds.

Start the day with an outing on the Cape Cod Rail Trail, fashioned from a 19th-century rail line that once ran all the way to Provincetown.