There are
1,643 mi
from Dayton, OH to Holladay, UT
That's the driving distance. It would take 1 day 4 hours to go from Dayton, Ohio to Holladay, Utah.
The flight distance (direct flight from Dayton, OH to Holladay, UT) is 1,453.35 mi.
1,643 mi = 2,644.87 kms