In My Hero Academia Chapter 49, Gran Torino blitzes Izuku while he struggles to use Full Cowling. I'll be calculating how fast he's moving.
Calculation[]
Midoriya height = 399.01 pixels (1.66 meters)
Gran Torino's distance = 2858.82 pixels (11.88 meters)
In order to find the timeframe, I looked at a few of the raw scans from the chapter to discover any hidden text which would help me. The translations below are what I found.
撃は おも 重くない! けど目で追える スピードじゃない!!
"That wasn't a strong attack, but it's not something you can see with your eyes!"
Essentially, Midoriya states that Gran Torino is moving faster than the eye can see here. And that usually would imply that he’s crossing distances at or less then 13 milliseconds.
V = D/T = 11.88/0.013 = 913.84 m/s or Mach 2.66
Final Tally[]
Gran Torino’s speed = 913.84 m/s or Mach 2.66 (Supersonic+)