There are
1,540 mi
from Rialto, CA to Pharr, TX
That's the driving distance. It would take 1 day 2 hours to go from Rialto, California to Pharr, Texas.
The flight distance (direct flight from Rialto, CA to Pharr, TX) is 1,267.08 mi.
1,540 mi = 1.61 kms