There are
2,978 mi
from Gainesville, FL to Seatac, WA
That's the driving distance. It would take 2 days 5 hours to go from Gainesville, Florida to Seatac, Washington.
The flight distance (direct flight from Gainesville, FL to Seatac, WA) is 2,449.13 mi.
2,978 mi = 3.22 kms