There are
1,557 mi
from Mcallen, TX to Kaysville, UT
That's the driving distance. It would take 1 day 5 hours to go from Mcallen, Texas to Kaysville, Utah.
The flight distance (direct flight from Mcallen, TX to Kaysville, UT) is 1,289.69 mi.
1,557 mi = 1.61 kms