There are
1,493 mi
from Simi Valley, CA to Garland, TX
That's the driving distance. It would take 1 day 1 hour to go from Simi Valley, California to Garland, Texas.
The flight distance (direct flight from Simi Valley, CA to Garland, TX) is 1,275.32 mi.
1,493 mi = 1.61 kms