There are
763 mi
from Simi Valley, CA to Evanston, WY
That's the driving distance. It would take 13 hours 45 mins to go from Simi Valley, California to Evanston, Wyoming.
The flight distance (direct flight from Simi Valley, CA to Evanston, WY) is 644.54 mi.
763 mi = 1,228.06 kms