Alaska has the longest coastline of any U.S. state.

Alaska's coastline stretches over 33,500 miles, making it the state with the longest coastline in the United States by a significant margin. This vast coastline includes the Bering Sea, the Gulf of Alaska, the Arctic Ocean, and the Pacific Ocean. Alaska’s diverse and rugged coastline features numerous fjords, bays, islands, and inlets, contributing to its natural beauty and wildlife habitats. The state’s extensive coastline supports a variety of activities such as fishing, shipping, and exploration, as well as vital ecosystems for marine and coastal wildlife.