Howe Island is connected to the mainland only by two ferries, one at each end. The western ferry is a fairly large one, operated by the same agency that operates the Wolfe Island to Kingston ferry. The ferry on the eastern end, though, is operated by the island’s township and is a very small cable ferry that can be summoned at any time during the day except lunchtime. You have to pay to get onto the island; the return-to-mainland ride is free (keep your ticket to show you paid).
Start from the Kingston ferry terminal and turn right on Hwy 2, heading east. The first part of this route is very busy, crossing the causeway and climbing a bit of hill away from town.
This ride is a hair over 16 miles from the Kingston ferry terminal. For riders coming from Cape Vincent, you’d have to add another 20 miles to the round trip.