Where to find Gloom in FireRed & LeafGreen

FireRed only
Walk: Route 12 (5%), Route 13 (5%), Route 14 (5%) + 1 more

• Route 12 — Walk
• Route 13 — Walk
• Route 14 — Walk
• Route 15 — Walk

Gloom in every game · Pokémon FireRed & LeafGreen interactive map (Kanto)