There are
2,273 mi
from Pasco, WA to Chillicothe, OH
That's the driving distance. It would take 1 day 16 hours to go from Pasco, Washington to Chillicothe, Ohio.
The flight distance (direct flight from Pasco, WA to Chillicothe, OH) is 1,874.96 mi.
2,273 mi = 3,658.21 kms