Miles between Simi Valley, CA and Rock Springs, WY

There are
865 mi
from Simi Valley, CA to Rock Springs, WY

That's the driving distance. It would take 15 hours 26 mins to go from Simi Valley, California to Rock Springs, Wyoming.

The flight distance (direct flight from Simi Valley, CA to Rock Springs, WY) is 725.85 mi.

865 mi = 1,391.34 kms