There are
1,922 mi
from Roseville, CA to Lake St Louis, MO
That's the driving distance. It would take 1 day 8 hours to go from Roseville, California to Lake St Louis, Missouri.
The flight distance (direct flight from Roseville, CA to Lake St Louis, MO) is 1,635.36 mi.
1,922 mi = 1.61 kms