There are
1,838 mi
from Overland Park, KS to Sammamish, WA
That's the driving distance. It would take 1 day 7 hours to go from Overland Park, Kansas to Sammamish, Washington.
The flight distance (direct flight from Overland Park, KS to Sammamish, WA) is 1,492.10 mi.
1,838 mi = 1.61 kms