There are
2,203 mi
from La Mesa, CA to Piqua, OH
That's the driving distance. It would take 1 day 15 hours to go from La Mesa, California to Piqua, Ohio.
The flight distance (direct flight from La Mesa, CA to Piqua, OH) is 1,879.82 mi.
2,203 mi = 3,544.83 kms