For 1.5 hours before and after low tide, a gravel bar is exposed connecting the town of Bar Harbor and Bar Island. On the island, the dog-friendly Bar Island Trail gradually ascends through the forest on an old road to various open sections with views of Bar Harbor and Frenchman Bay. Exercise caution and be aware of the tides, as the ocean otherwise covers the bar. If you walk over to the island and lose track of time, it is 9 hours until the bar emerges again. This hike is 1.9 miles round trip.