Where to catch Rattata

In Johto & Kanto (Gold, Silver & Crystal)

• Burned Tower — Walk
• Mt. Mortar — Walk
• Route 1 — Walk
• Route 11 — Walk
• Route 22 — Walk
• Route 29 — Walk
• Route 3 — Walk
• Route 30 — Walk
• Route 31 — Walk
• Route 32 — Walk
• Route 33 — Walk
• Route 34 — Walk
• Route 38 — Walk
• Route 39 — Walk
• Route 4 — Walk
• Route 42 — Walk
• Route 46 — Walk
• Route 6 — Walk
• Route 7 — Walk
• Route 8 — Walk
• Route 9 — Walk
• Sea Route 21 — Walk
• Sprout Tower — Walk
• Tin Tower — Walk
• Tohjo Falls — Walk
• Union Cave — Walk

In Kanto (Red, Blue & Yellow)

• Pokémon Mansion — Walk
• Route 1 — Walk
• Route 10 — Walk
• Route 11 — Walk
• Route 16 — Walk
• Route 18 — Walk
• Route 2 — Walk
• Route 22 — Walk
• Route 3 — Walk
• Route 4 — Walk
• Route 5 — Walk
• Route 6 — Walk
• Route 7 — Walk
• Route 8 — Walk
• Route 9 — Walk
• Sea Route 21 — Walk

Rattata — full Pokédex entry