There are
1,688 mi
from Mission Viejo, CA to Johnston, IA
That's the driving distance. It would take 1 day 5 hours to go from Mission Viejo, California to Johnston, Iowa.
The flight distance (direct flight from Mission Viejo, CA to Johnston, IA) is 1,418.88 mi.
1,688 mi = 2,717.00 kms