There are
728 mi
from Topeka, KS to Gahanna, OH
That's the driving distance. It would take 13 hours 41 mins to go from Topeka, Kansas to Gahanna, Ohio.
The flight distance (direct flight from Topeka, KS to Gahanna, OH) is 685.21 mi.
728 mi = 1,171.10 kms