There are
1,703 mi
from Garland, TX to Sunnyvale, CA
That's the driving distance. It would take 1 day 6 hours to go from Garland, Texas to Sunnyvale, California.
The flight distance (direct flight from Garland, TX to Sunnyvale, CA) is 1,462.87 mi.
1,703 mi = 2,740.56 kms