There are
697 mi
from Olathe, KS to Leander, TX
That's the driving distance. It would take 12 hours 4 mins to go from Olathe, Kansas to Leander, Texas.
The flight distance (direct flight from Olathe, KS to Leander, TX) is 598.86 mi.
697 mi = 1,122.27 kms