There are
1,251 mi
from Rialto, CA to Fredericksburg, TX
That's the driving distance. It would take 21 hours 12 mins to go from Rialto, California to Fredericksburg, Texas.
The flight distance (direct flight from Rialto, CA to Fredericksburg, TX) is 1,111.81 mi.
1,251 mi = 1.61 kms