Route 21

30 Pokémon can be caught at Route 21 in Kanto — highlighted on the map below.

Flowing between Pallet Town and Cinnabar Island, Route 21 is a north-south sea passage in southwestern Kanto, called Sea Route 21 in Generation I. Just south of Pallet, an outcrop on the eastern side holds the only grassy area found on any water route until Generation IV. The route's look changes considerably across games: early versions feature small bridges staffed with Trainers, while Generation III replaces them with sandy islands, and later games station up to ten Trainers across islands and open water.