Bowser Castle 1 is a retro race track from Super Mario Kart. It is the fourth track of the Mushroom Cup. The track later reappeared in the Extra Cups of Mario Kart: Super Circuit.

Currently there are 2 version available:

• SNES Bowser Castle 1 (Yoshidude4) based on the original version.
  
• SNES Bowser Castle 1 (Prellit) based on the original version.
  

Aditionally an exclusive remake of this track exists on the following RomHacks:

• Ermii Kart DS
• Mario Kart DS 3D Famicom