How many hours driving Montreal to Kentucky?

Answer 1

City Centre to City Centre is 925 miles - if you can maintain an average speed of 50mph, it would take 18 1/2 hours actual driving plus whatever comfort breaks and fuel stops you need to take.

If you take a 20 minute break every 3 hours or so you would be looking at a total time of around 21 to 22 hours.

If you are planning to do it, get someone to share the driving with or better still aim to do it in 2 halves with an overnight stop half way, perhaps in Buffalo on the banks of the Eastern tip of Lake Erie.