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
| EV | Map | Area | Daytime | Pokemon |
|---|---|---|---|---|
| ATK | Route 24 | Surf | Day | Krabby, Kingler, Seaking |
| DEF | Surf, Fishing | Morning | Koffing, Weezing, Poliwrath | |
| SPD | Land | Day | Pidgey, Pidgeotto, Pidgeot | |
| SPATK | Land | Night | Oddish, Gloom, Vileplume | |
| SPDEF | Surf, Fishing | Night | Tentacool, Tentacruel, Slowking | |
| HP | Land | Morning | Caterpie, Jigglypuff, Wigglytuff |
Johto
| EV | Map | Area | Daytime | Pokemon |
|---|---|---|---|---|
| ATK | Route 31 | Land | Morning | Sentret, Nuzleaf, Shiftry |
| DEF | Land | Day | Sandshrew, Sandslash, Golem | |
| SPD | Surf, Fishing | Morning | Zubat, Golbat, Crobat | |
| SPATK | Land | Night | Gastly, Haunter, Gengar | |
| SPDEF | Surf, Fishing | Night | Seel, Lombre, Ludicolo | |
| HP | Surf | Day | Wooper, Quagsire, Azumarill |
Hoenn
| EV | Map | Area | Daytime | Pokemon |
|---|---|---|---|---|
| ATK | Route 120 | Land | Day | Nidoran Male, Nidorino, Nidoking |
| DEF | Surf, Fishing | Night | Koffing, Pelipper, Poliwrath | |
| SPD | Surf, Fishing | Day | Zubat, Golbat, Crobat | |
| SPATK | Land | Morning | Mareep, Flaaffy, Ampharos | |
| SPDEF | Surf, Fishing | Morning | Seel, Mantine, Politoed | |
| HP | Land | Night | Nidoran Female, Nidorina, Nidoqueen |
Shinnoh
| EV | Map | Area | Daytime | Pokemon |
|---|---|---|---|---|
| ATK | Route 208 | Land | Night | Patrat, Kricketune, Staraptor |
| DEF | Surf, Fishing | Morning | Koffing, Weezing, Poliwrath | |
| SPD | Surf, Fishing | Night | Zubat, Golbat, Crobat | |
| SPATK | Land | Day | Gastly, Haunter, Gengar | |
| SPDEF | Surf, Fishing | Day | Seel, Lombre, Ludicolo | |
| HP | Land | Morning | Dunsparce, Lickitung, Lickilicky |
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.
All regions
Other mentionable spots
| EV | Map | Area | Daytime | Pokemon | Avoid this Pokemon | Lvl |
|---|---|---|---|---|---|---|
| SPDEF | Route 41 | Surf | Morning, Day | Tentacool, Tentacruel, Mantine | Lanturn (2 HP) | 30-35 |
Notes
Route 41 is also good to level up your pokemons because that is a lvl 30-35 map.