Miles between Longmont, CO and Simi Valley, CA

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

That's the driving distance. It would take 18 hours 56 mins to go from Longmont, Colorado to Simi Valley, California.

The flight distance (direct flight from Longmont, CO to Simi Valley, CA) is 854.50 mi.

1,060 mi = 1.61 kms