Part 2: 1 badge — beat Brock (Boulder Badge)
Cascade Badge territory opens.
1 badge — beat Brock (Boulder Badge) opens 9 areas. There are 39 trainers standing in them. The fights at this checkpoint are Rival Blue (Charmander) — rematch 2, Rival Blue (Squirtle) — rematch 2, Rival Blue (Bulbasaur) — rematch 2, and 4 more.
Where to go
Cerulean City
Wild: Magikarp 40% · Lv 11, Orfry 30% · Lv 14, Poliwag 20% · Lv 13, Staryu 11% · Lv 13
Trainers: Rocket #1 Lv 13, Rocket #5 Lv 17, Rocket #16 Lv 23, Rocket #17 Lv 23, Rocket #19 Lv 25, Rocket #20 Lv 26 +2 more
Route 3
Wild: Pidgey 29.7% · Lv 7-8, Spearow 20.3% · Lv 7-8, Rattata 19.9% · Lv 7, Jigglypuff 10.6% · Lv 5-7 +2 more
Trainers: Youngster #1 Lv 11, Youngster #2 Lv 14, Bug Catcher #4 Lv 10, Bug Catcher #5 Lv 10, Bug Catcher #6 Lv 10, Lass #1 Lv 9 +2 more
Route 4
Wild: Magikarp 40% · Lv 12, Orfry 30% · Lv 12, Rattata 29.7% · Lv 11-12, Poliwag 20% · Lv 12 +6 more
Trainers: Lass #4 Lv 37
Mt. Moon 1F
Wild: Bittybat 69.1% · Lv 6-10, Geodude 14.9% · Lv 8-9, Sandshrew 9.8% · Lv 9, Paras 5.1% · Lv 8 +1 more
Trainers: Youngster #3 Lv 10, Bug Catcher #7 Lv 12, Bug Catcher #8 Lv 10, Lass #5 Lv 11, Lass #6 Lv 14, Super Nerd #1 Lv 11 +1 more
Mt. Moon B1F
Wild: Bittybat 44.9% · Lv 8-10, Geodude 25% · Lv 7-8, Sandshrew 16.1% · Lv 9-10, Paras 9.8% · Lv 9 +1 more
Mt. Moon B2F
Wild: Bittybat 35.1% · Lv 9-10, Geodude 29.7% · Lv 9-10, Sandshrew 19.2% · Lv 10-12, Paras 9.8% · Lv 10 +2 more
Trainers: Super Nerd #2 Lv 12, Rocket #2 Lv 11, Rocket #3 Lv 12, Rocket #4 Lv 16
Pewter Gym
Trainers: Jr. Trainer♂ #1 Lv 11, ★ Brock Lv 14
Cerulean Gym
Trainers: Jr. Trainer♀ #1 Lv 19, Swimmer #1 Lv 16, ★ Misty Lv 14, Firefighter #1 Lv 15
Cerulean City - char/squirt/bulba are now evolved
Trainers: ★ Rival Blue (Charmander) — rematch 2 Lv 18, ★ Rival Blue (Squirtle) — rematch 2 Lv 18, ★ Rival Blue (Bulbasaur) — rematch 2 Lv 18, ★ Rival Blue (Pikachu) — rematch 2 Lv 18, ★ Rival Blue (Eevee) — rematch 2 Lv 18
★ Rival Blue (Charmander) — rematch 2 — Cerulean City - char/squirt/bulba are now evolved
| Pokémon | Moves | |
|---|---|---|
 | Pidgeotto Lv 18 | Sand-Attack Quick Attack |
 | Abra Lv 15 | Thunder Wave |
 | Rattata Lv 15 | Quick Attack Hyper Fang |
 | Wartortle Lv 18 | Bubble Water Gun |
★ Rival Blue (Squirtle) — rematch 2 — Cerulean City - char/squirt/bulba are now evolved
| Pokémon | Moves | |
|---|---|---|
| Pidgeotto Lv 18 | Sand-Attack Quick Attack |
| Abra Lv 15 | Thunder Wave |
| Rattata Lv 15 | Quick Attack Hyper Fang |
 | Ivysaur Lv 18 | Vine Whip Leech Seed |
★ Rival Blue (Bulbasaur) — rematch 2 — Cerulean City - char/squirt/bulba are now evolved
| Pokémon | Moves | |
|---|---|---|
| Pidgeotto Lv 18 | Sand-Attack Quick Attack |
| Abra Lv 15 | Thunder Wave |
| Rattata Lv 15 | Quick Attack Hyper Fang |
 | Charmeleon Lv 18 | Ember Leer |
Also fought around here
This game's documentation doesn't say where 18 of its 471 fights happen, so those trainers are on no part of this walkthrough; they are all on the Trainers page. It also doesn't say when Faraway Island Inside, Digletts Cave open up, so they are in no part above; each has its own route page.