There are
2,612 mi
from Boynton Beach, FL to San Marcos, CA
That's the driving distance. It would take 1 day 21 hours to go from Boynton Beach, Florida to San Marcos, California.
The flight distance (direct flight from Boynton Beach, FL to San Marcos, CA) is 2,257.99 mi.
2,612 mi = 3.22 kms