There are
1,697 mi
from San Leandro, CA to Vermillion, SD
That's the driving distance. It would take 1 day 5 hours to go from San Leandro, California to Vermillion, South Dakota.
The flight distance (direct flight from San Leandro, CA to Vermillion, SD) is 1,369.65 mi.
1,697 mi = 1.61 kms