There are
1,120 mi
from Simi Valley, CA to Cheyenne, WY
That's the driving distance. It would take 19 hours 37 mins to go from Simi Valley, California to Cheyenne, Wyoming.
The flight distance (direct flight from Simi Valley, CA to Cheyenne, WY) is 897.08 mi.
1,120 mi = 1.61 kms