Speed Run Original was an Interact floor containing a high-speed obby to complete. If you fall in this obby you would be teleported back to the elevator. This floor had 5 sections and was easier than the Speed Run that is currently in the game. The floor time is shorter than the one that is in the game today.
It was a normal floor back then.
Reason of being removed: Updated change to the newer Speed Run that is still in the game today.