Because he likes running and moving fast.
it gives sonic a diffirent run, namely, the sonic advance run.
sonic can probaly run as long as he keeps his energy
sonic
He could run at sonic speeds.
yes he could sonic could out run coyote
Sonic doesn't want her to hug him.
In the game Sonic and Sega All Stars Racing if you check Sonic's profile it defines exactly how fast he can run.
yes you right sonic test run 2 and its in the second page
no one can. Sonic can run faster than 300 miles per hour!
Sonic can run at 3000 kilometers per hour.
Sonic can run faster than the speed of sound, which is impossible for any human being.
i like sonic and i run