There are
677 mi
from Overland Park, KS to Harker Heights, TX
That's the driving distance. It would take 11 hours 43 mins to go from Overland Park, Kansas to Harker Heights, Texas.
The flight distance (direct flight from Overland Park, KS to Harker Heights, TX) is 571.24 mi.
677 mi = 1,089.65 kms