There are
1,362 mi
from San Clemente, CA to Harker Heights, TX
That's the driving distance. It would take 23 hours 42 mins to go from San Clemente, California to Harker Heights, Texas.
The flight distance (direct flight from San Clemente, CA to Harker Heights, TX) is 1,175.17 mi.
1,362 mi = 2,192.45 kms