There are
1,725 mi
from Killeen, TX to Concord, CA
That's the driving distance. It would take 1 day 6 hours to go from Killeen, Texas to Concord, California.
The flight distance (direct flight from Killeen, TX to Concord, CA) is 1,456.96 mi.
1,725 mi = 2,776.56 kms