From the Super Mario Wiki
Excitebike Arena is a racecourse included with The Legend of Zelda × Mario Kart 8 downloadable content in Mario Kart 8, as well as the base content of Mario Kart 8 Deluxe, as the second course in the Egg Cup. As its name implies, the course is strongly based on the NES game Excitebike.
The racecourse is simply a huge oval (much like Baby Park, but longer and larger in its width) with many ramps and mud spots, much like original Excitebike tracks. Signs featuring the Japanese & European box art for Excitebike can be seen throughout the course, as well as a large statue of an 8-bit biker sprite on one end of the track. This track is unique in the fact that the track changes every time a race starts. There are many different segments with jumps, ramps and mud spots that change position and height; according to Mario Kart 8 director Kosuke Yabuki, there are over 200 different patterns of such elements. A standard pattern is used on time trials.
Course trailer: Get ready for high-octane racing and high-flying hurdles! 
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