There are
2,201 mi
from Harlingen, TX to Claremont, NH
That's the driving distance. It would take 1 day 17 hours to go from Harlingen, Texas to Claremont, New Hampshire.
The flight distance (direct flight from Harlingen, TX to Claremont, NH) is 1,852.02 mi.
2,201 mi = 3,542.38 kms