We just left FL in June and have already seen Yellowstone and Tetons. Here's the stops we made or you could make: Some you will want to stay more than one night. You would be on the move a lot!! You probably won't have time to see sights along the way.
1. Eagles Roost RV Park - Lake Park GA
2. Gunter Hill COE - Wetumpka AL
3. Maumelle COE - Little Rock AR
4. Twin Fountains RV Park - Oklahoma City OK
5. North Platte NE (don't go through Denver - construction!!)
6. KOA - Cheyenne WY
7. Yellowstone Inn RV Park - west of Cody WY - we drove into Cody and drove to Yellowstone. I would allow 2-3 days here.
8. Wind River RV Park - Riverton WY - we drove to the Tetons from there.
9. Salt Lake City or Provo UT
10. Williams AZ - Grand Canyon.
If you don't just have to see the Grand Canyon, I would recommend going into Montana and seeing Glacier National Park. Absolutely gorgeous!! We stayed at Glacier Meadow RV Park in Essex, MT and then moved to Columbia Falls RV Park in Columbia Falls but either park would work to see both sides of Glacier.
