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Old 02-23-2020, 07:26 PM   #1
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Phoenix to Yellowstone National Park

Early planning stages for a trip to Yellowstone National Park from Phoenix, Az. We're pulling a Rockwood 2608bs with a 2008 Toyotal Tundra with the 5.7l V-8. I'm interested in the number and severity of steep grades going north from Phoenix on the I-17, over to the I-15, and continuing on the I-20.
Thanks for any information.
Tony Remo
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Old 02-23-2020, 09:27 PM   #2
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If you have no troubles on the really long grade on I17 into Flagstaff, then you will be fine for everything else.
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Old 02-24-2020, 06:53 PM   #3
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We took I17 to 89 to I15 to rt 20 into West Yellowstone. The pull up to Flag is harder than the rest of the trip. We did it in July a few years ago. Take your time on 17 and you will be fine. Some crazy drivers put there.
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Old 02-26-2020, 05:43 PM   #4
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I'm in Surprise AZ and heading north in June.

We have taken your route a few times and is perfectly ok if you plan to camp in the town of West Yellowstone.
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I plan going thru Las Vegas, and north from St George Utah on I-15 then hit I-80 East (Provo) then north to Jackson Hole on 89.

We have traveled up there other ways but this year we will use 89 as I was told its a nice drive in the motorhome.
We plan to stay a few nights in Jackson Hole then drive north into the south entrance of Yellowstone and out the west entrance and stay in W Yellowstone at the Grizzly RV Resort.

My trip will start in mid June and we have reservation at Grizzle RV Resort for the 4th of July week 7 days.

Here is my planned route up after I get into Utah.
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Old 03-15-2020, 09:37 PM   #5
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This may be helpful. In fact all states have a dot page. Ie scdot, codon, sddot etc.


https://www.codot.gov/travel/maximum...in-passes.html
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