There are
1,604 mi
from Longview, TX to Simi Valley, CA
That's the driving distance. It would take 1 day 3 hours to go from Longview, Texas to Simi Valley, California.
The flight distance (direct flight from Longview, TX to Simi Valley, CA) is 1,389.09 mi.
1,604 mi = 1.61 kms