There are
1,298 mi
from Markham, IL to Deerfield Beach, FL
That's the driving distance. It would take 1 day to go from Markham, Illinois to Deerfield Beach, Florida.
The flight distance (direct flight from Markham, IL to Deerfield Beach, FL) is 1,140.45 mi.
1,298 mi = 2,088.15 kms