Well marked and maintained trail while in the forest. Once you get to the beach you have multiple out/back options to get to the lighthouse. Our hike was about 5.5 miles but walking a good portion on the sand made it a bit more strenuous than the total distance would imply.
PS - definitely do a tick check post hike as everyone in our group found at least one during our inspections.
The paths are clearly marked and well maintained. The part of the path that goes through the woods has an elevation that allows for a great view of the Long Island sound. Great trail for dogs. In season, bathrooms and water. Great sunset views.