Page "Wally West" Paragraph 23

While many hypothesize that the Speed Force is to an extent sentient, most utilize it primarily as just a tool, drawing upon it and using it when necessary ; however, Max Mercury, a veteran speedster, has been able to commune and communicate with it, making it his life's goal to unlocking its secrets with many calling him the " Zen Master of the Speed Force ".

The Speed Force serves as the ultimate measure of velocity in the DC Universe.

They are often referred to in terms of barriers: Sound Barrier, Light Barrier, Time Barrier, Dimensional Barrier, and finally the Speed Force Barrier.