There are
1,473 mi
from Simi Valley, CA to Greenville, TX
That's the driving distance. It would take 1 day 2 hours to go from Simi Valley, California to Greenville, Texas.
The flight distance (direct flight from Simi Valley, CA to Greenville, TX) is 1,302.73 mi.
1,473 mi = 2,370.69 kms