There are
1,594 mi
from Montebello, CA to Weslaco, TX
That's the driving distance. It would take 1 day 3 hours to go from Montebello, California to Weslaco, Texas.
The flight distance (direct flight from Montebello, CA to Weslaco, TX) is 1,316.68 mi.
1,594 mi = 2,564.79 kms