There are
1,702 mi
from Round Rock, TX to Sayreville, NJ
That's the driving distance. It would take 1 day 6 hours to go from Round Rock, Texas to Sayreville, New Jersey.
The flight distance (direct flight from Round Rock, TX to Sayreville, NJ) is 1,474.72 mi.
1,702 mi = 1.61 kms