While on any rail press and hold to sprint.
― In-game description[src]
The rail sprint was initially created as an upgrade to the rail walk innovated by "Tennessee Kid," but was not added to the Thievius Raccoonus or the Cooper Vault. It was made available for purchase from ThiefNet during the events of the fourth game.
- Once you start sprinting, you do not need to use to keep going; as long as is held, Sly will continue running until he reaches the end of the rail.
- Like the Silent Sprint, there is a motion blur effect during this move.