Miles between San Marcos, CA and Watertown, SD

There are
1,757 mi
from San Marcos, CA to Watertown, SD

That's the driving distance. It would take 1 day 6 hours to go from San Marcos, California to Watertown, South Dakota.

The flight distance (direct flight from San Marcos, CA to Watertown, SD) is 1,342.17 mi.

1,757 mi = 1.61 kms