There are
2,505 mi
from Lakeland, FL to Monrovia, CA
That's the driving distance. It would take 1 day 20 hours to go from Lakeland, Florida to Monrovia, California.
The flight distance (direct flight from Lakeland, FL to Monrovia, CA) is 2,162.86 mi.
2,505 mi = 3.22 kms