There are
1,401 mi
from Marshalltown, IA to Melbourne, FL
That's the driving distance. It would take 1 day 2 hours to go from Marshalltown, Iowa to Melbourne, Florida.
The flight distance (direct flight from Marshalltown, IA to Melbourne, FL) is 1,186.76 mi.
1,401 mi = 2,255.28 kms