There are
1,818 mi
from Reno, NV to St Peters, MO
That's the driving distance. It would take 1 day 6 hours to go from Reno, Nevada to St Peters, Missouri.
The flight distance (direct flight from Reno, NV to St Peters, MO) is 1,558.93 mi.
1,818 mi = 1.61 kms