Flash move at the speed of lightning, apparently 1/3rd the speed of light. 1/3rd the speed of light is about 223538876 mph, or about Mach 291343 In this case, Flash moves about 455 times faster than Quicksilver.
According to one comic flash can reach a minimum of 23 to 76 Tredecillion miles per hour beating instantaneous teleportation.
There's no logic there, also no ways to beat instant teleportation whatsoever. His speed have to be tied down with something, would also cause Cherenkov Radiation.
Actually before he did so he told everyone on earth to start running. But ah its a comic. I agree with a lack of logic in there though.
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