I think it depends on the overall mechanical condition of the thing. If you are comfortable with its reliability I don't see why not. It should have a big enough engine, most motorhomes I've seen were adequately powered, but I suppose it depends on just what engine & tranny you have. You can expect some pretty steep grades throughout your trip. If you can handle the 6-8% grades near your home, you stand a pretty good chance of handling them out west. The difference is in the West some of those same grades may be 15 or more miles long with 20mph cutbacks. Check out the mechanics, especially the brakes and if you have confidence in the machine, GO FER IT! Have a great trip!