How fast is Sonic the hedgehog?

While in his normal form, Sonic can go at an average of 750 miles per hour, but over the years in his adventures, Sonic the hedgehog has been increasing his avenge top speed so there is no real limit on how fast he can go.  So given enough time, he might go faster than light without his super form. In his super form, Sonic can go up to five million miles per second. But Sonic can only go in super form of he has seven chaos emeralds and at least fifty gold rings. And in his hyper/ultra form, it’s increased by 2000% So not only Sonic the hedgehog can travel through time, but can also reverse it. Now I like everyone to know, that this is related to the shows and comics, not the games, expect for Sonic cd.