There are
2,974 mi
from Boynton Beach, FL to Piedmont, CA
That's the driving distance. It would take 2 days 5 hours to go from Boynton Beach, Florida to Piedmont, California.
The flight distance (direct flight from Boynton Beach, FL to Piedmont, CA) is 2,562.49 mi.
2,974 mi = 4,786.43 kms