There are
2,904 mi
from San Clemente, CA to Middletown, CT
That's the driving distance. It would take 2 days 3 hours to go from San Clemente, California to Middletown, Connecticut.
The flight distance (direct flight from San Clemente, CA to Middletown, CT) is 2,498.68 mi.
2,904 mi = 4,672.98 kms