There are
2,140 mi
from Mcallen, TX to Shasta Lake, CA
That's the driving distance. It would take 1 day 13 hours to go from Mcallen, Texas to Shasta Lake, California.
The flight distance (direct flight from Mcallen, TX to Shasta Lake, CA) is 1,704.41 mi.
2,140 mi = 3.22 kms