EV-training locations
Various Effort Value-training locations are recommended in order to optimize the EVs apportionment of one's Pokémon. While not categorically required, they are recommended because they have an all-encompassing array of common wild Pokémon yielding EVs for each stat.
Regional locations
Kanto
| Area | EV | Pokémon | Method | Time |
|---|---|---|---|---|
| Route 24 | HP | Caterpie; Jigglypuff; Wigglytuff | Land | Morning |
| Attack | Krabby; Kingler; Seaking | Surfing | Day | |
| Defense | Koffing; Weezing; Poliwrath | Surfing; Fishing | Morning | |
| Special Attack | Oddish; Gloom; Vileplume | Land | Night | |
| Special Defense | Tentacool; Tentacruel; Slowking | Surfing; Fishing | Night | |
| Speed | Pidgey; Pidgeotto; Pidgeot | Land | Day |
Johto
| Area | EV | Pokémon | Method | Time |
|---|---|---|---|---|
| Route 31 | HP | Wooper; Quagsire; Azumarill | Surfing | Day |
| Attack | Machop; Machoke; Machamp | Land | Morning | |
| Defense | Sandshrew; Sandslash; Golem | Land | Day | |
| Special Attack | Gastly; Haunter; Gengar | Land | Night | |
| Special Defense | Seel; Lombre; Ludicolo | Surfing; Fishing | Night | |
| Speed | Zubat; Golbat; Crobat | Surfing; Fishing | Morning |
Hoenn
| Area | EV | Pokémon | Method | Time |
|---|---|---|---|---|
| Route 130 | HP | Nidoran Female; Nidorina; Nidoqueen | Land | Night |
| Attack | Nidoran Male; Nidorino; Nidoking | Land | Day | |
| Defense | Koffing; Pelipper; Poliwrath | Surfing; Fishing | Night | |
| Special Attack | Mareep; Flaaffy; Ampharos | Land | Morning | |
| Special Defense | Seel; Mantine; Politoed | Surfing; Fishing | Morning | |
| Speed | Zubat; Golbat; Crobat | Surfing; Fishing | Day |
Sinnoh
| Area | EV | Pokémon | Method | Time |
|---|---|---|---|---|
| Route 208 | HP | Dunsparce; Lickitung; Lickilicky | Land | Morning |
| Attack | Patrat; Kricketune; Staraptor | Land | Night | |
| Defense | Koffing; Weezing; Poliwrath | Surfing; Fishing | Morning | |
| Special Attack | Gastly; Haunter; Gengar | Land | Day | |
| Special Defense | Seel; Lombre; Ludicolo | Surfing; Fishing | Day | |
| Speed | Zubat; Golbat; Crobat | Surfing; Fishing | Night |
Effort Wald
- Main article: Kanto Safari Effort Wald
Adjoining the Kanto Safari Zone in Fuchsia City, the Effort Wald is the most tautly organized EV-hunting area in the game. It is sectionalized into two zones, each inhabited by three Pokémon (for a total of six) with distinct EV yields.
Despite its optimality for EV-training, some might prefer non-Safari training areas because the Wald charges 
10,000 for 20-minute sessions. Nonetheless, many are willing to shell out the requisite fee for its convenience as opposed to the scattered public areas.