There are
1,811 mi
from San Marcos, CA to Fargo, ND
That's the driving distance. It would take 1 day 7 hours to go from San Marcos, California to Fargo, North Dakota.
The flight distance (direct flight from San Marcos, CA to Fargo, ND) is 1,428.54 mi.
1,811 mi = 1.61 kms