The Thousand Islands Paddling Trail is divided into 9 paddling routes, organized to follow the flow of the St. Lawrence river from Kingston, in the west, to Brockville, in the east. They are somewhat artificial in that the river can be paddled in any direction and in thousands of combinations. Routes are constructed as half-day and full-day excursions and directly abut one another to allow for extended tripping. If you are looking for something specific - visit the Index of Routes.
Also check out the Geology Boat Tour of the St. Lawrence Islands in our Geology Section.