Miles between Simi Valley, CA and Castle Rock, CO

There are
1,060 mi
from Simi Valley, CA to Castle Rock, CO

That's the driving distance. It would take 18 hours 54 mins to go from Simi Valley, California to Castle Rock, Colorado.

The flight distance (direct flight from Simi Valley, CA to Castle Rock, CO) is 845.81 mi.

1,060 mi = 1.61 kms