WalkSpeed

WalkSpeed is a property of the object that determines the model's speed when being controlled by a player or when MoveTo is activated. WalkSpeed is most often changed for running or sprinting mechanics, or lowered as a part of crouching mechanics.

The default WalkSpeed for Roblox characters is 16 studs/second. A higher number equals a higher speed, and a lower number equals a lower speed. Formerly, if the WalkSpeed number was negative, controls would be reversed. Now, it prevents the character from moving at all. If the WalkSpeed is high enough, a player can run through walls depending on how thick they are (i.e. having a speed of 250 might cause a user to pass through a 1-stud-thick wall). Increasing the WalkSpeed will also increase the horizontal distance a player can jump.