Originally Posted by Southwest Dave
Hello and welcome to the RTA forums !
The greatest thing about creating your own Road trip is the freedom to go at what pace you are most happy with. The first thing to point out is that Yellowstone is quite some distance from the rest of your trip. As part of your 'Grand circle' tour it would add a days drive from Bryce canyon and another back to Arches NP and they would be full days. Then 2 days in Yellowstone is barely enough time to do it justice, it is a huge park and the going is slow. So thats a minimum of 4 days just for a 'quick' visit and if your 15 days is 'door to door' you will lose 2 days in the air and you will want some time to adjust on arrival and some to relax before flying home. Before you know it half of your time is gone ! So it's possible to include Yellowstone but it will become all too rushed in my opinion, the choice is yours.
Personally I would plan to visit Yellowstone on another trip and have some quality time in Utah and Arizona visiting the National parks. If you would like any further help with your planning just ask here, we are happy to help. To give you an idea of what it might look like, here's a rough idea based on personal experience.
Day 1. Fly into Vegas
Day 2 PM drive to Springdale UT to visit Zion NP.
Day 3 Visit Zion NP stay Springdale
Day 4 Visit Zion and continue to Bryce canyon
Day 5 Visit Bryce canyon and stay or head to Torrey for night.
(UT scenic 12 Highway through Escalante is a wonderful drive between Bryce canyon and Capitol reef NP and highly recommend you take this route)
Day 6 Visit Capitol reef NP. Head to Moab UT.
Day 7 and 8 Visit Arches and Canyonlands NP's and Dead Horse SP.
Day 9 and 10 Drive through Monument valley to Page AZ. Lake Powell, Antelope canyon(tour) etc
Day 11 To the Grand canyon south rim via Desertview drive
Day 11 Grand canyon
Day 12 back to Vegas via Hoover dam
Day 13/14 Vegas and home
Of course this can be juggled in many different ways but I hope it gives you a start point.