There are
1,535 mi
from Topeka, KS to Duarte, CA
That's the driving distance. It would take 1 day 2 hours to go from Topeka, Kansas to Duarte, California.
The flight distance (direct flight from Topeka, KS to Duarte, CA) is 1,278.48 mi.
1,535 mi = 1.61 kms