From what I can tell this is a pretty common trip, that being said I am in an information overload type of setting. The rudimentary plan is to have 4-5 people in a sedan, possibly have a tent in the trunk for reserve/sleep in the car and have a fun filled week or so in the month of September. Thinking about have the pace as slow needed, do not mind winding country roads, and would love to do hikes/backpacking that is ok for a bunch of novice but enthusiastic outdoor surburbanites. So it seems like national parks are in good order. We also love love love food, so out there culinary expeditions or glutton delights are highly welcomed. We have never tried to plan anything of this nature and are keen to hear any suggestions. The only thing that is limiting us is time, money, our starting location of Irvine, California our turn around point in Colorado, and stopping in Vegas at least once during the trip. Hoping to take different routes there and back.
I apologize for the vagueness of this, but we are really spit balling and grasping at straws; from what I can really tell a minimum rudimentary plan would be Irvine-Vegas-Utah/Zion-Boulder-Denver-Grand Canyon-Irvine and anything of interest in between that fits our constraints of having no plans on where to stay and being able to be back in Irvine within 10 days
*Oh and I don't know if this is relevant information or not but we are all in our early 20's so theres that too.
Thank you everyone for your time!