The Great Lakes St. Lawrence Seaway System stretches over 2,000 miles inland between the USA and Canada, connecting the Gulf of St. Lawrence with Duluth in Minnesota, on Lake Superior. There are 30 ports currently handling cruise ships along the waters of the St. Lawrence Seaway and all five Great Lakes. This destination is increasingly becoming popular for small, luxury size cruise ships, with nine calling in 2022 and 11 expected in 2023. Cruise ships sail the Great Lakes between April and October.