The Seaside Hill tracks in Sonic & Sega All-Stars Racing are in a scenic tropical island setting. With corkscrews, beaches, and bridges galore, this area makes for great racing.
- Whale Lagoon - An easy course. The Orca from Sonic Adventure leaps between the figure 8 at the start of the track. The course has a corkscrew near the end as well.
- Lost Palace - This course runs along two beaches before entering a corkscrew. After some sharp turns, hitting a jump will lead you to a branching path to the finish.
- Ocean Ruin - This course's most notable feature is using huge underwater tunnels to traverse in the ocean. One tunnel even forms a loop OUT of the water!
- Seaside Square - A square arena that is for mission events and multiplayer mode.