Miles between Simi Valley, CA and Gillette, WY

There are
1,217 mi
from Simi Valley, CA to Gillette, WY

That's the driving distance. It would take 21 hours 49 mins to go from Simi Valley, California to Gillette, Wyoming.

The flight distance (direct flight from Simi Valley, CA to Gillette, WY) is 989.47 mi.

1,217 mi = 1.61 kms