There are
1,522 mi
from Upland, CA to Kilgore, TX
That's the driving distance. It would take 1 day 2 hours to go from Upland, California to Kilgore, Texas.
The flight distance (direct flight from Upland, CA to Kilgore, TX) is 1,318.51 mi.
1,522 mi = 1.61 kms