There are
1,578 mi
from Pharr, TX to Monrovia, CA
That's the driving distance. It would take 1 day 3 hours to go from Pharr, Texas to Monrovia, California.
The flight distance (direct flight from Pharr, TX to Monrovia, CA) is 1,301.94 mi.
1,578 mi = 2,539.30 kms