Trying to plan a trip to Yellowstone with our 36 foot class A and a toad on a dolly. We'll be coming in from the South, from I-15. How is highway 20 for getting to West Yellowstone? We'd rather not hit windy roads or too much of a grade. Would we be better off going up to I-90 and dropping south from there? Looks like that move will add at least 100 miles onto the trip. Thoughts?

Nothing wrong with the 20, it's approved for 18 wheelers.

good road you will have no problem.

All the entrances to Yellowstone are beautiful. I never leave by the route I arrived.

Where are you staying when you get to Yellowstone? It isn't just a point on the map, it is bigger than Delaware and Rhode Island combined.

You can catch 20 off of 15 in Idaho falls takes you to west yellowstone

Best Approach to Yellowstone? | Good Sam Community

bobsallyh
Explorer II
Mar 14, 2019
You won't have any trouble on US 20 out of Idaho Falls. There is a slight pull on the West Yellowstone side of Ashton, but that is really it. US 20 is a truckers route to avoid I-90, the opposite way you will be traveling, going west. It saves them from continuing on thru I-90 to go south on I-15 at Butte.
mkcurran
Explorer
Mar 14, 2019
We plan on staying somewhere around West Yellowstone and taking two days to see the park. At least there we have plenty of options. Jackson, WY didn't have great options.
Thanks y'all for easing my mind on this route.
doc_brown
Explorer
Mar 14, 2019
Entered Yellowstone from all 4 entrances driving my 40’ pusher with jeep in tow and like many driven through the park.
ppine
Explorer II
Mar 14, 2019
All of them. I like to come in the east entrance from Cody and look for moose along the Shoshone River.

Two days is not enough to see the best National Park in the World.
BarryG20
Explorer
Mar 14, 2019
You can catch 20 off of 15 in Idaho falls takes you to west yellowstone
westernrvparkow
Explorer
Mar 14, 2019
Where are you staying when you get to Yellowstone? It isn't just a point on the map, it is bigger than Delaware and Rhode Island combined.
Lwiddis
Explorer II
Mar 14, 2019
All the entrances to Yellowstone are beautiful. I never leave by the route I arrived.
donkeydew
Explorer
Mar 14, 2019
good road you will have no problem.
azdryheat
Explorer
Mar 14, 2019
Nothing wrong with the 20, it's approved for 18 wheelers.