User blog comment:Strife237/A Chaotic Adventure 26/@comment-11295807-20130730054219/@comment-11456184-20130810175746

Sonic's regular speed is somewhere beyond Mach 1. Sonic can also go beyond 2,500 mph and 3, 840 to 7,680 even, about 10 times the speed of sound. So there you have it. But if you wanna lose a race to me, just tell me.