There are
1,488 mi
from Killeen, TX to Hyattsville, MD
That's the driving distance. It would take 1 day 2 hours to go from Killeen, Texas to Hyattsville, Maryland.
The flight distance (direct flight from Killeen, TX to Hyattsville, MD) is 1,290.45 mi.
1,488 mi = 1.61 kms