Here’s the Flash evacuating 532,000 people from a nuclear explosion in less time than it takes you to blink. Fans have calculated this speed to be 13 trillion times the speed of light:
Here he is turning on every single radio on the planet within septo-seconds (0.000000000000000000001 second is one septo-second):
Here he is outrunning death, which puts him on the 4th dimension (theoretically infinite speed):
The Flash even outran instant teleportation, that is, he crossed the universe in less time than a Planck instant (5.39 x 10^-44 seconds), which is well above decillions times the speed of light:
The Flash is terrifyingly fast. It takes cosmic-level beings just to match him.