There are
1,814 mi
from Rosemead, CA to Maryland Heights, MO
That's the driving distance. It would take 1 day 7 hours to go from Rosemead, California to Maryland Heights, Missouri.
The flight distance (direct flight from Rosemead, CA to Maryland Heights, MO) is 1,564.05 mi.
1,814 mi = 2,918.81 kms