Miles between Round Rock, TX and Duncanville, TX

There are
173 mi
from Round Rock, TX to Duncanville, TX

That's the driving distance. It would take 3 hours 2 mins to go from Round Rock, Texas to Duncanville, Texas.

The flight distance (direct flight from Round Rock, TX to Duncanville, TX) is 154.89 mi.

173 mi = 278.29 kms