Bowser's Castle

Bowser's Castle is the third course in the Special Cup. It has remained as the third course in the Special Cup, since Mario Kart: Double Dash!!. This version of Bowser's Castle seems to have the structure of a haunted mansion. It has cobwebs, lava pillars, Thwomps, and stairs. The music from this course includes a part from the theme of the Bowser's Castles in Mario Kart: Double Dash!! and Mario Kart Wii. There are two gliding segments, one right at the beginning, right in front of the Start/Finish Line, and one at the end, right before the Start/Finish Line. The second gliding segment requires boost panels in order to get into the inside of Bowser's Castle. Right after the gliding segments, there are two levels, an upper level, and a lower level if the upper level is missed during the glide. Both levels have sets of stairs. Of course, an underwater section has been added to this level right pass the wide wooden rotating tunnel, the tunnel is pass a room after the stairs.

Also, Bowser Castle 1 from Mario Kart: Super Circuit, the only GBA retro track in the game, returns as the second track of the Shell Cup.