Thanks Snowy -
Hey, what is it that you want out of this trip?
Have you been to the States before? Do you want to hit some of the spectacular parks?
There are plenty of lodging options near the great parks - but they also tend to be sold out.
Also, the couple who run the Westwinds Motel in a small town will be glad to see you -
While the summer employee at a resort lodge will just yawn and tell you they are full.
Still, biking Going to the Sun Road - for ex. - is truly unforgettable.https://www.crazyguyonabike.com/doc/page/?o=tS&page_id=62784&v=60
For the purpose of discussion, let's say you will have from June 10th to July 20th.
June can be tricky in the American West. I've skied on fresh snow even in late June in Wyoming.
Plus, if it's been a snowy winter, there's a winter's worth of snow to melt out.
As far as the central part of the U.S. - the Great Plains - Nebraska sure beats Kansas.
On the TransAm in eastern Colorado and western Kansas you have 300+ miles of oppressive flat.
The Nebraska Sandhills are gently rolling and have much of their grass cover rather than square wheat fields.
One possibility is to fly into Seattle and take the morning ferry to Friday Harbor in the San Juan Islands.
You can spend the afternoon tooling around the island and overnight in Friday Harbor.
(This will allow you ferry rides at the beginning and end of your trip.)
Another ferry the next a.m. will take you to Anacortes and the start of the Northern Tier.
I would suggest the Northern Tier from Anacortes to Glacier National Park.
Then US 89 makes a fine ride along the Front Range all the way down to Yellowstone.https://www.crazyguyonabike.com/doc/page/?o=tS&page_id=26438&v=Nq
- read backwards
From Yellowstone, you could either head due east over the Bighorn Mountains to the Black Hills -
Or you could cut southeast thru Wind River Canyon to Casper and via US 20 into Nebraska. (More direct)
US 20 really is a pleasant way to cross the Great Plains - and I have ridden the Plains many times.
It's about 2150 miles from Anacortes in Washington State to Sioux City on the Missouri River.
(About 200 miles longer that the route I did this past summer)
Which would mean about 3563 miles, total, if you then did a straight short to the east coast.
ZZZZ is right about the distance between lodging in the West.
But there are some excellent place to stay 20-30-40 miles outside of the major national parks.
One way to do Yellowstone would be to stay in Gardiner - then ride to Pahaska Tepee.
Leave early when traffic is light - then spend the middle of the day hiking along Grand Canyon of the Yellowstone -
Then ride late afternoon and early evening to Pahaska - it's a wild downhill from Sylvan Pass that will peel your ears back.
(Of course, you always have to be attuned to the weather, too.)
I've ridden Nevada many times and love it - but it is extremely remote and challenging from the get go.
The Northern Tier is moderately remote, too, but with more services.
The route I took last summer misses the national parks but has plenty of services.
Just some ideas - there are many ways to slice the pie.
PS - Whether you fly into Seattle or San Fran, you will need a little time to acclimate.
Gaining 8 hours in a 10 hour flight plays tricks on your body.
So if you stay up until 9 p.m. and get up at 5 a.m. you can be raring to go.
A ferry ride and low-key day make sense on day 1.