There are
1,713 mi
from Hayward, CA to Killeen, TX
That's the driving distance. It would take 1 day 6 hours to go from Hayward, California to Killeen, Texas.
The flight distance (direct flight from Hayward, CA to Killeen, TX) is 1,455.47 mi.
1,713 mi = 2,756.99 kms