There are
1,724 mi
from Garland, TX to Piedmont, CA
That's the driving distance. It would take 1 day 6 hours to go from Garland, Texas to Piedmont, California.
The flight distance (direct flight from Garland, TX to Piedmont, CA) is 1,476.32 mi.
1,724 mi = 2,773.87 kms