There are
1,726 mi
from Concord, CA to Killeen, TX
That's the driving distance. It would take 1 day 6 hours to go from Concord, California to Killeen, Texas.
The flight distance (direct flight from Concord, CA to Killeen, TX) is 1,456.96 mi.
1,726 mi = 2,777.54 kms