Miles between Round Rock, TX and Smyrna, TN

There are
856 mi
from Round Rock, TX to Smyrna, TN

That's the driving distance. It would take 15 hours 9 mins to go from Round Rock, Texas to Smyrna, Tennessee.

The flight distance (direct flight from Round Rock, TX to Smyrna, TN) is 746.89 mi.

856 mi = 1,377.84 kms