There are
2,181 mi
from Rosemead, CA to Piqua, OH
That's the driving distance. It would take 1 day 14 hours to go from Rosemead, California to Piqua, Ohio.
The flight distance (direct flight from Rosemead, CA to Piqua, OH) is 1,898.38 mi.
2,181 mi = 3,510.20 kms