Leaving Tower, the road up Dunraven Pass is quite steep, so you will probably be Pretty slow. Going down to Canyon will be less steep. Driving it in the other direction is more difficult.
You will get to Tower via Cooke City, but you will have a choice of routes to get to Cooke City. You can take the Beartooth hwy. (212) from Red Lodge or you can take Chief Joseph hwy. and hit 212 juse east of Cooke City. Both of those routes are more difficult than Dunraven Pass.
The Red Lodge route is a lot longer, but is probably a slightly easier drive. From a scenic point of view, I prefer that route, but both are beautiful.
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