There are
1,446 mi
from Dayton, OH to Weslaco, TX
That's the driving distance. It would take 1 day 2 hours to go from Dayton, Ohio to Weslaco, Texas.
The flight distance (direct flight from Dayton, OH to Weslaco, TX) is 1,230.91 mi.
1,446 mi = 1.61 kms