New Hampshire to Yellowstone

I would definitely book reservations for this year, especially since so many people have taken up RVing.

I90 is the most direct route but it does take you through major cities. I've done it multiple times. Others may have suggestions to circumvent them but if you stay on 90 make sure you say in 90 express and not 90 local through Chicago. I've done that trip in three weeks (including Yellowstone but not Little Big Horn) so 6 weeks should be fine. Did straight shots out and back so not much advice on what to stop at. While you are in SD I'd go to Keystone. Very touristy and kitschy but fun. Bear Country USA is also very enjoyable. Treat yourself to elk medallions at Jackson Lake Lodge's restaurant in Grand Teton. Enjoy!

My suggestions stem from places I've been, but you may or may not be interested in. We are heading to the Black Hills in SD this summer, with another week in the Bighorn Mtns. Not our first trip but always so much to see/do. Here are some ideas:

-- Rock n Roll Hall of Fame Museum in Cleveland (depends on your interest)
-- Wisconsin Dells (the route you mention takes you on outskirts). Touristy for sure, but can be fun to visit shops, golf, mini-golf, restaruants, etc.
-- On I-90 at Worthington, MN, North of there is Walnut Grove, home of the Ingalls family from Little House on the Prairie fame. Small museum and house tour.
-- Mitchel SD, famous corn palace. I've driven by and it's something to look at but never been in.
-- 1880 Town on I-90 in SD. Can't miss it -- signs leading up to it both directions. If you liked 'dances with wolves' starring Kevin Costner, they have many pieces from that film. Besides that, these are all historical buildings from the old west put in a unique town. My kids loved it, and wife and I still stop every time....so much to see in the town.
-- Wall Drug -- laugh if you must, but we love the 5 cent coffee (really), the fresh donuts, and the lunch plate specials. Junk shop for sure....but still fun to roam around and rest.
-- Badlands National Park in Wall SD: worth the drive thru and visit. Something to see
-- Minute Men National Missle Historic Site (near wall on the eastern side): visit a real nuke silo and museum. Something to see!
-- Devil's Tower National Monument: there is a KOA right next door -- something to really see -- hike around the volcano
-- Bighorn National Forest: beautiful. Most campsites have no hookups but there are FU sites in towns on the eastern side of the mtns.
-- Cody, WY: visit the buffalo bill museum of the west. Visit the IRMA hotel, built by buffalo bill. Many other shops and things to see here
-- Old Trail Town just west of Cody: more historical buildings and cabins. Visit Hole in Wall saloon, famous for butch cassidy & sundance kid visiting (not the actors-- the real deal!)

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I'll add the Spam Museum in Austin, MN. I found it fun and interesting even though I don't like Spam.

Depending on your interests:

• Corning Glass Museum (requires taking I-88 and I-86 rather than the thruway across New York, which is not enormously different in length and less expensive in tolls)
  
• Niagara Falls (which isn't on I-88 and I-86)
  
• Cedar Point (Sandusky, OH) if you like roller coasters
  
• All sorts of things to see and do in Chicago, but I'm not aware of any great options for camping whilst sightseeing there. The art institute, Field museum, museum of science and industry, ....
  

Maybe think about taking the northern route (I-94) in one direction; Theodore Roosevelt NP is one stop there that's worth seeing.

Second Badlands and Teddy Roosevelt NP.

meleekamp and DrewE offered up some great suggestions. May I add the Ford Museum in Detroit as well. Never been there but heard it's a great place to see. If taking 90, be prepared for tolls. Can figure out how much NY tolls are by going to the T-ways web site. If possible, try to get a NY E-Z pass ahead of time and see to what states it works in (it's a lot of them). Sadly, some states have E-Z passes just for their systems.

On a side note, order a Pocket Truck Stop guide for fuel stops along the routes you wish to take. Lot of info contained in a little book and HELPFUL!

NY tolls are by license plate if you don't have EZ Pass.

I am thinking of replacing my EZ Pass with Amazon's Uni Pass. Has anyone used this?

Sorry about the off topic above!

If you take I-90, you will only be about 25 miles from Niagara Falls. Unfortunately, it doesn't look like the USA / Canada border will be open in June, so you will only be able to see the American side.

ACZL wrote:
If taking 90, be prepared for tolls. Can figure out how much NY tolls are by going to the T-ways web site. If possible, try to get a NY E-Z pass ahead of time and see to what states it works in (it's a lot of them). Sadly, some states have E-Z passes just for their systems.

Any state or agency that is a member of the EZ Pass consortium will accept transponders and accounts from any other, and their transponders will likewise be accepted at any member's facilities. That's the whole point of the EZ Pass consortium, in fact. Some do offer discounts or other deals for their own account holders that are not applied to outsiders, but any transponder is accepted and charged at the standard rates.

Some states have other electronic tolling systems that are not part of EZ Pass and are not interoperable.

New York (well, the NY thruway commission, but not the port authority of New York and New Jersey) offers a thruway motorhome plan that can save a significant amount for motorhome drivers on the thruway--basically car rates rather than tall vehicle rates, or around a 50% savings in the standard tolls. It's not necessarily the simplest discount to get as you need to convince them that you actually have a motorhome to use it with.

Thanks to all who replied. I'm definitely going to take a few of the suggestions especially dropping by Niagara Falls. One of the conundrums I have is not being able to stop an extra day here or there if you find an interesting place because the reservations lock you in to being at a certain place on a certain day. I'm thinking of only making reservations in the busiest places like Custer S.P. Yellowstone, Niagara Falls etc and taking my chances that I'll find a spot to camp otherwise along my route. I'd like to get your thoughts on that. When we headed out in 2010 we never planned more than 2 days out and never had a problem. We traveled through most of the Eastto Tennessee then the South and Southwest.

Shomemule wrote:
Thanks to all who replied. I'm definitely going to take a few of the suggestions especially dropping by Niagara Falls. One of the conundrums I have is not being able to stop an extra day here or there if you find an interesting place because the reservations lock you in to being at a certain place on a certain day. I'm thinking of only making reservations in the busiest places like Custer S.P. Yellowstone, Niagara Falls etc and taking my chances that I'll find a spot to camp otherwise along my route. I'd like to get your thoughts on that. When we headed out in 2010 we never planned more than 2 days out and never had a problem. We traveled through most of the Eastto Tennessee then the South and Southwest.

We stayed at The Branches of Niagara CG a couple years ago. Nice place, nice pool, far 'nuff off the interstate, yet still close to it (no noise unlike the KOA). Not too far from the falls. While in the area, there is in Buffalo,a WWII ship & sub along their pier/waterfront as well as home of the chicken wings (ongoing battle between Duff's and Anchor Bar). We ate at the AB and wasn't impressed w/ it. IF by chance the border is open, I'd suggest the CA side to view the falls and if possible arrange to have dinner atop the Skylon tower (if open).