While on any rail press and hold
to sprint.
― In-game description[src]
Rail Sprint is a power-up for Sly Cooper from Sly Cooper: Thieves in Time. It costs 400 coins.
Use[]
The Rail Sprint allows Sly to sprint (hold while moving) while performing a Rail Walk. Like the Silent Sprint, there is a motion blur effect during this move. Once you start sprinting in one direction, you do not need to use
to keep going in that direction; as long as
is held, Sly will continue running until he reaches the end of the rail.