Routes 19 and 20 are oceanic paths in southern Kanto. They connect Fuchsia City in the northeast with Seafoam Island and Cinnabar Island in the southwest. Route 20 is actually cut in half by Seafoam Islands, so the eastern part of Route 20 will be shared with Route 19 on this page to make the walkthrough easy to follow.
From Fuchsia City’s Pokemon Center, walk south onto the beach of Route 19. Grab the Full Heal near the ledges, then challenge the Pokemon Trainers near the shore. The Trainer on the right is Reece. The Trainer on the left is Richard.
Defeat Richard to receive P760 and 3 Poke Balls. The path to the south is the oceanic route. To get across, you must teach your partner Pokemon the secret technique called Sea Skim. This technique can be taught to your Pokemon by a man with a Lapras in the Safari Zone. The first four Trainers of Route 19 are lined up to the south.