Hello People!
This follows the same method of getting a mount at 100% speed then running and clicking a bench (you then dismount) to go 100% speed while running.
First of all, if you read the title, this is for rogues only!
What you must first do is find a nearby bench and right-click to sit on it.
Once doing so, blow your sprint cooldown. After you do this try to run away from the bench over and over again while rapidly clicking the bench at the same time.
If you've done this right, you should be sitting on the bench again after the 15 second sprint is up, but when you get up you will be moving the same speed as your spring goes which is usually 75%.
I did do a search and could find no other techniques used this way to have unlimited sprint. Also, I'm not sure if this wears off if you teleport, enter an instance, etc.
One last thing, if your server detects hacks which mine doesn't, you will not have much fun with this.