From the Super Mario Wiki
Hyrule Circuit is a racecourse included with The Legend of Zelda × Mario Kart 8 downloadable content in Mario Kart 8 and in the base content of Mario Kart 8 Deluxe, and is the fourth and final course of the Triforce Cup. Hence the name, this course is based on The Legend of Zelda series. This track sports several references to the franchise, such as having Rupees replace coins, Deku Babas replace Piranha Plants, Keese replace Swoops, and several sound effects from classic Zelda games.
The track starts in Hyrule Field, as it zigzags through a grassy area. Several ramps can be found here, before a gliding pad that sends the player into Hyrule Castle. After a U-turn, the player arrives in a grand hall with the Master Sword resting in a Triforce-shaped pedestal. The routes split at the sword, before merging directly afterward. After a jump out the back of the castle, the player lands in a small village before going through a valley with Deku Babas. After a final jump, the player returns to the start.
The Legend of Zelda references
As this course is based upon The Legend of Zelda franchise, it also features various references to those games. They are listed below:
Names in other languages