There are
1,880 mi
from Simi Valley, CA to Brownsville, TN
That's the driving distance. It would take 1 day 8 hours to go from Simi Valley, California to Brownsville, Tennessee.
The flight distance (direct flight from Simi Valley, CA to Brownsville, TN) is 1,668.34 mi.
1,880 mi = 1.61 kms