There are
1,334 mi
from Sunnyvale, CA to Hereford, TX
That's the driving distance. It would take 23 hours 28 mins to go from Sunnyvale, California to Hereford, Texas.
The flight distance (direct flight from Sunnyvale, CA to Hereford, TX) is 1,108.46 mi.
1,334 mi = 2,146.09 kms