There are
1,602 mi
from Upland, CA to Port Neches, TX
That's the driving distance. It would take 1 day 3 hours to go from Upland, California to Port Neches, Texas.
The flight distance (direct flight from Upland, CA to Port Neches, TX) is 1,412.72 mi.
1,602 mi = 1.61 kms