There are
2,340 mi
from Parma, OH to Downey, CA
That's the driving distance. It would take 1 day 17 hours to go from Parma, Ohio to Downey, California.
The flight distance (direct flight from Parma, OH to Downey, CA) is 2,040.69 mi.
2,340 mi = 3,765.08 kms