Phase 2 section
Pokemon Red and Blue Route 4 Walkthrough
Cascade Badge Route 4 section for the Pokemon Red and Blue walkthrough with wild Pokemon, trainers, items, hidden items, coordinates, and boss strategy.
Exit Mt. Moon, collect the outside Route 4 items, and drop into Cerulean. This page is a standalone section for Phase 2: Cascade Badge, with source-backed Red/Blue encounter, trainer, item, hidden item, and boss data.
Source maps
Route 4.
Route plan
The ledge makes this one-way until later. Finish Mt. Moon before jumping down.
Wild Pokemon
Each area below has its own table, split by encounter method. Red/Blue has no time-of-day mechanic, so every method uses a single rate column, and the R/B chips show which version each row applies to. Tall grass, cave, and Surf rates merge every base slot for a species out of the Gen I ten-slot table: 51/256, 51/256, 39/256, 25/256, 25/256, 25/256, 13/256, 13/256, 11/256, and 3/256. Fishing, gift, trade, prize, and static rows keep their own labeled rates.
| Pokémon | Games | Levels | Rate | Notes |
|---|---|---|---|---|
| Tall grass / cave floor | ||||
 Rattata | RB | 8-12 | 40% | — |
 Spearow | RB | 8-12 | 35% | — |
 Ekans | RB | 6-12 | 25% | — |
 Sandshrew | RB | 6-12 | 25% | — |
| Fishing — Old Rod | ||||
 Magikarp | RB | 5 | 100% | Any fishable water tile. |
| Fishing — Good Rod | ||||
 Goldeen | RB | 10 | 50% | Any fishable water tile after getting Good Rod. |
 Poliwag | RB | 10 | 50% | Any fishable water tile after getting Good Rod. |
| Fishing — Super Rod | ||||
 Psyduck | RB | 15 | 33.3% | Super Rod group 3. |
| Goldeen | RB | 15 | 33.3% | Super Rod group 3. |
 Krabby | RB | 15 | 33.3% | Super Rod group 3. |
Trainers
| Route order | Trainer | Team | Reward | Optional / rematch note |
|---|---|---|---|---|
| 1. Route 4 (63, 3) |  LassParty #4 | $465 | One-time trainer; no rematch in Red/Blue. |
Items And Hidden Items
| Item | Type | Area / direction | Coordinate | Requirement |
|---|---|---|---|---|
| TM04 Whirlwind | Visible item ball | Visible item ball at (57, 3) in Route 4. | (57, 3) | Reach this tile; HMs or story flags may be needed for late-game dungeons. |
| Great Ball | Hidden item | Hidden on the searchable tile at (40, 3) in Route 4. | (40, 3) | Press A on the hidden tile or use the Itemfinder nearby. |
Boss Strategy
No boss or Rival branch is attached to this section.
Completion Checklist
- Pick up Route 4's visible TM and hidden Great Ball.
- Catch version-specific Route 4 Pokemon if needed.
- Enter Cerulean stocked for Rival and Misty.
- Verify the wild table's version splits before leaving if you are filling the Pokedex.
- Use the item rows as a visible-item and hidden-item sweep before moving to the next section.
Sources
pret/pokered: wild encounters, trainer parties, trainer money, map object events, hidden event items, rods, trades, and prize Pokemon.- Encounter odds aggregate the Gen I ten-slot rates: 51/256, 51/256, 39/256, 25/256, 25/256, 25/256, 13/256, 13/256, 11/256, and 3/256.
- Red/Blue has no day/night encounter column; tables group each area by encounter method with R/B game chips and a single merged Rate column.