Miles between Simi Valley, CA and Nampa, ID

There are
818 mi
from Simi Valley, CA to Nampa, ID

That's the driving distance. It would take 15 hours 37 mins to go from Simi Valley, California to Nampa, Idaho.

The flight distance (direct flight from Simi Valley, CA to Nampa, ID) is 651.52 mi.

818 mi = 1,315.97 kms