Route 20FireRed&LeafGreen
"Open water between the Seafoam Islands and Cinnabar Island. The Seafoam cave entrances sit along the way, and you need Surf to pass through."
ROUTE 20 MAP
Water route split by the Seafoam Islands in the middle. Surf between Cinnabar Island on the west side and Fuchsia City on the east. You can enter the caves from either direction.
Pokemon Encounters
Water route between Cinnabar and Fuchsia. Tentacool at 100% while surfing, Horsea and Krabby through the rods. Gyarados at 15% via Super Rod is the best catch here.
Old Rod1
Good Rod3
Super Rod5
Magikarp
Also found in 41 other locations
ITEMS
One hidden Stardust on the water. Sells for 1,000 at any Poke Mart if you have the Itemfinder.
Stardust
A pretty red sand with a loose, silky feel. It can be sold at a high price.
Stardust
A pretty red sand with a loose, silky feel. It can be sold at a high price.
TRAINERS
Swimmers and Bird Keepers share the water route to Seafoam. 10 fights mixing Water and Flying-types. Pack something that hits both if you can.
Roger
Route 20 Guide
Yes. Several routes have version-exclusive encounters. FireRed gets Oddish, Growlithe, Scyther, and Electabuzz in certain areas, while LeafGreen gets Bellsprout, Vulpix, Pinsir, and Magmar. Check the encounter table for this route and look for the version tag next to each Pokemon.
After battling a trainer, walk 100 steps to recharge it, then use it while standing on the route. Nearby trainers ready for a rematch get an exclamation mark over their head. Rematched trainers carry stronger teams as you progress through the game. You get the VS Seeker from a girl in the Vermilion City Pokemon Center.