There are
1,888 mi
from San Marcos, CA to Dyersburg, TN
That's the driving distance. It would take 1 day 9 hours to go from San Marcos, California to Dyersburg, Tennessee.
The flight distance (direct flight from San Marcos, CA to Dyersburg, TN) is 1,587.32 mi.
1,888 mi = 1.61 kms