Miles between Round Rock, TX and Florissant, MO

There are
815 mi
from Round Rock, TX to Florissant, MO

That's the driving distance. It would take 14 hours 59 mins to go from Round Rock, Texas to Florissant, Missouri.

The flight distance (direct flight from Round Rock, TX to Florissant, MO) is 708.08 mi.

815 mi = 1,310.90 kms