There are
1,534 mi
from Topeka, KS to Walnut, CA
That's the driving distance. It would take 1 day 2 hours to go from Topeka, Kansas to Walnut, California.
The flight distance (direct flight from Topeka, KS to Walnut, CA) is 1,275.64 mi.
1,534 mi = 1.61 kms