Hyperspeed in Super Mario 64 is a term that refers to a large amount of speed, usually for Mario. It is commonly defined as more than 100 speed or less than -100 speed. Getting this amount of speed usually requires Glitches. Hyperspeed is often helpful in speedruns because it allows quicker movement, as well as the ability to clip through walls. It helps in some challenges.
List of Hyperspeed Methods: