There are
1,750 mi
from Harlingen, TX to Pocatello, ID
That's the driving distance. It would take 1 day 7 hours to go from Harlingen, Texas to Pocatello, Idaho.
The flight distance (direct flight from Harlingen, TX to Pocatello, ID) is 1,421.20 mi.
1,750 mi = 2,815.78 kms