There are
2,557 mi
from San Clemente, CA to Apex, NC
That's the driving distance. It would take 1 day 21 hours to go from San Clemente, California to Apex, North Carolina.
The flight distance (direct flight from San Clemente, CA to Apex, NC) is 2,196.51 mi.
2,557 mi = 4,114.79 kms