There are
1,935 mi
from San Marcos, CA to Champlin, MN
That's the driving distance. It would take 1 day 10 hours to go from San Marcos, California to Champlin, Minnesota.
The flight distance (direct flight from San Marcos, CA to Champlin, MN) is 1,512.15 mi.
1,935 mi = 1.61 kms