How fast does Sonic the Hedgehog run?
Sonic the Hedgehog is faster than the speed of sound. When in super form, I believe he is faster than light, but that theory is not completely true, so don't rely on it.
In Sonic 06 (Sonic the Hedgehog) Mach Speed is only usable in a certain stage after your regular speed fails to accomplish your mission, sonic goes to desperate messures and starts going really fast. Such as the mach speed section for wave ocean, Sonic is forced to run super fast to catch up with the Egg Carrier and Save Elise