Miles between Simi Valley, CA and Boulder, CO

There are
1,046 mi
from Simi Valley, CA to Boulder, CO

That's the driving distance. It would take 18 hours 47 mins to go from Simi Valley, California to Boulder, Colorado.

The flight distance (direct flight from Simi Valley, CA to Boulder, CO) is 842.06 mi.

1,046 mi = 1.61 kms