The Great Waterway Loop of Wielkopolska is a water trail, covering a distance of 688 kilometres, and leading along the Warta River (from Konin to Santok – 338.4 km), the Noteć (from Santok to Nakło – 187.2 km) the Bydgoszcz Canal (from Nakło to Bydgoszcz – 15.7 km) and the waterway linking the Bydgoszcz Canal with the Warta (from Bydgoszcz to Konin – 146.6 km). The latter section is greatly varied and leads along the Górnonotecki Canal, the Upper Noteć River flowing through the following lakes: Wolickie, Sadłogoszcz, Wojdal, Mielno, Szarlej and Gopło. The Ślesiński Canal starts from Gopło Lake and leads via Lakes Czarne, Ślesińskie, Mikorzyńskie, and Pątnowskie to the Warta River. The water route traverses three provinces: Wielkopolskie, Lubuskie and Kujawsko-Pomorskie. It is accessible to vessels whose maximum length is: for the Warta from Santok to Luboń near Poznań – 41 m, the Warta from Luboń near Poznań to Konin – 24 m, the Ślesiński Canal – 57 m, Lake Gopło – 67 m, the Upper Noteć and the Górnonotecki Canal – 24 m, the Bydgoszcz Canal – 57 m, the Lower Noteć from Nakło to Krzyż – 41 m, the Lower Noteć from Krzyż Wielkopolski to Santok – 57 m. The permissible draught of vessels for specific waterways depends on the current minimum water depth for safe navigation which is published by the administration of the waterway on its website.
The Great Waterway Loop of Wielkopolska connects the waterways of Poland with a large network of waterways in Western Europe (via the Oder and the Spree Rivers) and in Eastern Europe (via the Vistula, Narew and Neman Rivers). The northern part of the Loop is part of European Inland Waterway E70 leading from Antwerp to Klaipeda.