We are a dutch family if 5 with 3 teenagers. We are planning a roadtrip in the USA next year. We will arrive at June 29th in Chicago and leave at July 24th from San Francisco.

The places we surely are going to visit are Chicago – St. Louis – Monument Valley – Grand Canyon (we think of North Rim) – Las Vegas – Los Angeles – Yosemite – San Francisco.
We hired a RV with unlimited miles ;-)
We would like to have some advice for the middle part of our trip. We will celebrate 4th of July in St. Louis and plan to arrive at Grand Canyon 12th of July. So we have approx. a week.

We have a several options:
• We can follow original route 66:
St. Louis – Springfield -Tulsa – Oklahoma City – Amarillo – Albuquerque – Gallup and then north to Monument Valley.
• Another option is to cross a little bit higher:
St. Louis – Joplin – Wichita – Colorado Springs – Durango – Monument Valley
• Or even more higher and visit Denver.

I would like to have some advice what will be the best (and of course nicest) road to pass the Rocky Mountains. We have to regard we are travelling with an rv.