There are
526 mi
from Boynton Beach, FL to Summerville, SC
That's the driving distance. It would take 9 hours 51 mins to go from Boynton Beach, Florida to Summerville, South Carolina.
The flight distance (direct flight from Boynton Beach, FL to Summerville, SC) is 448.68 mi.
526 mi = 847.11 kms