Ok, I know this sounds insane but I did the math but when I say "did the math" I could be very wrong.
The movie Turbo which came out in 2013 has a snail move at an excess of 200mph or more but we will say 200mph for my sake.
The average snail's speed is 0.029825817mph s for Theo (snails name) to move even at 200mph his powers multiplier on his base speed would have to be 6705.60005112 and if a human got the same powers (considering the average sprint speed to be 15 of a healthy male) the new top speed of the male would be 100584.000767mph or 27.94 miles per second but I remembered scene early in the film where theo times himself and it takes him 17minutes to move 30cm so again did the math the multiplier would be 303987.199926 and following the same process the new maximum speed for the human male would be 4559807.99889mph or 1266.613 miles per second.
Isn't that an insane power for anything other than a snail?