Just past the Canary Is., iirc, the current forks and you can easily wind up on the express to South America. It’s getting home that’s difficult. Not to mention convincing someone to go back there with you, to colonize or set up an emporium.
Long trip, but they are known to have traded for tin in Britain, and to have reconned the west coast of Africa (Periplus of Hanno) and circumnavigated Africa clockwise from the Red Sea (Herodotus).
https://cdn.britannica.com/91/53891-050-2E93317C/ocean-systems-world.jpg
