There are
1,084 mi
from Olathe, KS to Holladay, UT
That's the driving distance. It would take 18 hours 34 mins to go from Olathe, Kansas to Holladay, Utah.
The flight distance (direct flight from Olathe, KS to Holladay, UT) is 910 mi.
1,084 mi = 1.61 kms