There are
2,363 mi
from Harlingen, TX to Maple Valley, WA
That's the driving distance. It would take 1 day 19 hours to go from Harlingen, Texas to Maple Valley, Washington.
The flight distance (direct flight from Harlingen, TX to Maple Valley, WA) is 1,972.47 mi.
2,363 mi = 3,803.61 kms