There are
1,837 mi
from St George, UT to Piqua, OH
That's the driving distance. It would take 1 day 8 hours to go from St George, Utah to Piqua, Ohio.
The flight distance (direct flight from St George, UT to Piqua, OH) is 1,590.25 mi.
1,837 mi = 1.61 kms