There are
2,130 mi
from Mill Valley, CA to Midlothian, IL
That's the driving distance. It would take 1 day 12 hours to go from Mill Valley, California to Midlothian, Illinois.
The flight distance (direct flight from Mill Valley, CA to Midlothian, IL) is 1,854.67 mi.
2,130 mi = 3,427.43 kms