Miles between Round Rock, TX and Ontario, CA

There are
1,359 mi
from Round Rock, TX to Ontario, CA

That's the driving distance. It would take 23 hours 24 mins to go from Round Rock, Texas to Ontario, California.

The flight distance (direct flight from Round Rock, TX to Ontario, CA) is 1,190.10 mi.

1,359 mi = 1.61 kms