There are
1,358 mi
from Upland, CA to Harker Heights, TX
That's the driving distance. It would take 23 hours 32 mins to go from Upland, California to Harker Heights, Texas.
The flight distance (direct flight from Upland, CA to Harker Heights, TX) is 1,180.09 mi.
1,358 mi = 1.61 kms