Regal Ruin is the third course from the game, Sonic R.
Regal Ruin is an arid, desert race course, filled with sand-blasted ruins and ancient, secret passageways. It hides two Chaos Emeralds and each one hidden inside a small pyramid. It also has many shortcuts and small routes that can help the player to get lost, or to finish the race more quickly. The five Sonic Tokens located on the course can unlock the EggRobo.
- This stage is similar to Labyrinth Zone.