There are
1,792 mi
from Vacaville, CA to Harker Heights, TX
That's the driving distance. It would take 1 day 7 hours to go from Vacaville, California to Harker Heights, Texas.
The flight distance (direct flight from Vacaville, CA to Harker Heights, TX) is 1,464.84 mi.
1,792 mi = 1.61 kms