Miles between San Marcos, CA and Green River, WY

There are
861 mi
from San Marcos, CA to Green River, WY

That's the driving distance. It would take 15 hours 5 mins to go from San Marcos, California to Green River, Wyoming.

The flight distance (direct flight from San Marcos, CA to Green River, WY) is 716.67 mi.

861 mi = 1,385.43 kms