We start at Rio de Janeiro (Brazil) and take a walk along the beach until we have circled all Americas clockwise. Which countries do we enter successively until we are back in Rio?
We circle the continent clockwise (The sea is always on the left, the land on the right)
Estuaries as well as the Panama Canal are just crossed by magic ...
Note that we are likely to enter some countries multiple times!
Thanks. I'm not sure that you've got enough USA/Canadas. look at the border area just south of Vancouver. There's a place called Point Roberts where you'll come back into USA and out again on your walk.