Where to find Slowbro in Red, Blue & Yellow

Super Rod: Cerulean Cave (25%, Red & Blue only), Route 23 (25%, Red & Blue only)
Surf: Route 12 (5%, Yellow only), Route 13 (5%, Yellow only)
Walk: Seafoam Islands (5%)

• Cerulean Cave (1F, B1F) — Super Rod
• Route 12 — Surf
• Route 13 — Surf
• Route 23 — Super Rod
• Seafoam Islands (1F, B2F, B4F) — Walk

Slowbro in every game · Pokémon Red, Blue & Yellow interactive map (Kanto)