GoGoGo,
The velocity of a bullet is given in feet per second (fps) in the United States. The 0.22 rimfire cartridge, which has a very small powder charge,and is one of the smallest bullets, sends its bullets on their way at between 370 m/s and 460 m/s. Cartridges in rifles — centerfire cartridges — propel their bullets at a much faster rate. The 0.220 Swift, which drives a very small bullet at over 1220 m/s, is the cartridge with the highest velocity.
Lets just say you are attacked by a gunman CHAS VISHALOM, can you run at 370 mph? Frankly your chance of staying and fighting is much higher since during the initial struggle, you may A) Overcome your attacker and save your own and other lives B) Even if the struggle is even, your still not giving the attacker an opportunity, however by running you expose your head and back… The average human can run at 15 miles an hr with adrenaline, which would take about 4.5 seconds for the attacker to comfortably aim CHAS VISHALOM…
So the correct answer is to NOT RUN EVER! Take a self defense course at least to up your chances of survival…