| Rival — if you chose Totodile | Cherrygrove City | 1 | 5 |
| Rival — if you chose Chikorita | Cherrygrove City | 1 | 5 |
| Rival — if you chose Cyndaquil | Cherrygrove City | 1 | 5 |
| Falkner | Violet Gym | 2 | 10 |
| Bugsy | Azalea Gym | 3 | 16 |
| Rival — if you chose Totodile | Azalea Town | 3 | 18 |
| Rival — if you chose Chikorita | Azalea Town | 3 | 18 |
| Rival — if you chose Cyndaquil | Azalea Town | 3 | 18 |
| Whitney | Goldenrod Gym | 3 | 21 |
| Rival — if you chose Totodile | Burned Tower 1F | 4 | 24 |
| Rival — if you chose Chikorita | Burned Tower 1F | 4 | 24 |
| Rival — if you chose Cyndaquil | Burned Tower 1F | 4 | 24 |
| Morty | Ecruteak Gym | 4 | 25 |
| Chuck (with 5 badges) | Cianwood Gym | 4 | 31 |
| Pryce (with 5 badges) | Mahogany Gym | 4 | 33 |
| Pryce (with 6 badges) | Mahogany Gym | 5 | 35 |
| Jasmine (with 5 badges) | Olivine Gym | 5 | 36 |
| Jasmine (with 6 badges) | Olivine Gym | 5 | 36 |
| Chuck (with 6 badges) | Cianwood Gym | 5 | 36 |
| Pryce (with 7 badges) | Mahogany Gym | 5 | 38 |
| Jasmine (with 7 badges) | Olivine Gym | 5 | 38 |
| Chuck (with 7 badges) | Cianwood Gym | 5 | 38 |
| Rival — if you chose Totodile | Goldenrod Underground Switch Room Entrances | 5 | 40 |
| Rival — if you chose Chikorita | Goldenrod Underground Switch Room Entrances | 5 | 40 |
| Rival — if you chose Cyndaquil | Goldenrod Underground Switch Room Entrances | 5 | 40 |
| Clair | Blackthorn Gym 1F | 5 | 45 |
| Rival — if you chose Totodile | Victory Road | 6 | 48 |
| Rival — if you chose Chikorita | Victory Road | 6 | 48 |
| Rival — if you chose Cyndaquil | Victory Road | 6 | 48 |
| Elite Four Will | Wills Room | 5 | 50 |
| Elite Four Koga | Kogas Room | 5 | 52 |
| Elite Four Bruno | Brunos Room | 5 | 54 |
| Falkner (rematch, after the Elite Four) | Violet Gym | 5 | 55 |
| Whitney (rematch, after the Elite Four) | Goldenrod Gym | 5 | 55 |
| Bugsy (rematch, after the Elite Four) | Azalea Gym | 5 | 55 |
| Morty (rematch, after the Elite Four) | Ecruteak Gym | 5 | 55 |
| Pryce (rematch, after the Elite Four) | Mahogany Gym | 5 | 55 |
| Jasmine (rematch, after the Elite Four) | Olivine Gym | 5 | 55 |
| Chuck (rematch, after the Elite Four) | Cianwood Gym | 5 | 55 |
| Clair (rematch, after the Elite Four) | Blackthorn Gym 1F | 5 | 55 |
| Elite Four Karen | Karens Room | 5 | 55 |
| Champion Lance | Lances Room | 6 | 56 |
| Lt.Surge | Vermilion Gym | 6 | 60 |
| Erika | Celadon Gym | 6 | 62 |
| Misty | Cerulean Gym | 6 | 63 |
| Janine | Fuchsia Gym | 6 | 64 |
| Rival — if you chose Totodile | Mount Moon | 6 | 64 |
| Rival — if you chose Chikorita | Mount Moon | 6 | 64 |
| Rival — if you chose Cyndaquil | Mount Moon | 6 | 64 |
| Brock | Pewter Gym | 6 | 66 |
| Sabrina | Saffron Gym | 6 | 66 |
| Blaine | Seafoam Gym | 6 | 67 |
| Elite Four Will (rematch, after the Elite Four) | Wills Room | 6 | 68 |
| Elite Four Bruno (rematch, after the Elite Four) | Brunos Room | 6 | 68 |
| Elite Four Koga (rematch, after the Elite Four) | Kogas Room | 6 | 68 |
| Rival — if you chose Totodile | Indigo Plateau Pokémon Center 1F | 6 | 68 |
| Rival — if you chose Chikorita | Indigo Plateau Pokémon Center 1F | 6 | 68 |
| Rival — if you chose Cyndaquil | Indigo Plateau Pokémon Center 1F | 6 | 68 |
| Elite Four Karen (rematch, after the Elite Four) | Karens Room | 6 | 69 |
| Blue | Viridian Gym | 6 | 69 |
| Blue (rematch, after the Elite Four) | Viridian Gym | 6 | 69 |
| Champion Lance (rematch, after the Elite Four) | Lances Room | 6 | 70 |
| Champion Red | Silver Cave Room 3 | 6 | 93 |
| Champion Red (rematch, after the Elite Four) | Silver Cave Room 3 | 6 | 93 |