There are
2,182 mi
from San Marcos, CA to Springdale, OH
That's the driving distance. It would take 1 day 14 hours to go from San Marcos, California to Springdale, Ohio.
The flight distance (direct flight from San Marcos, CA to Springdale, OH) is 1,859.78 mi.
2,182 mi = 3,512.06 kms