Where to catch Spinarak

In Kitakami (Scarlet & Violet – The Teal Mask)

• Apple Hills — Walk
• Fellhorn Gorge — Walk
• Kitakami Hall — Walk
• Kitakami Road — Walk
• Kitakami Wilds — Walk
• Loyalty Plaza — Walk
• Mossfell Confluence — Walk
• Reveler's Road — Walk
• Timeless Woods — Walk

In Hoenn (Ruby, Sapphire & Emerald)

• Safari Zone — Walk

In Johto & Kanto (Gold, Silver & Crystal)

• National Park — Walk
• Route 2 — Walk
• Route 29 — Headbutt, Walk
• Route 30 — Walk, Headbutt
• Route 31 — Walk, Headbutt
• Route 34 — Headbutt, Walk
• Route 35 — Headbutt, Walk
• Route 36 — Headbutt, Walk
• Route 37 — Walk, Headbutt
• Route 38 — Headbutt, Walk
• Route 39 — Headbutt, Walk

Spinarak — full Pokédex entry