Hi, I am new to this site and am looking for some advice.
Next year I have 3 weeks available in September for a tour. I found this itinerary on another site for 2 weeks.
Denver, Rocky Mountain NP, Yellowstone NP (1 full day), Grand Teton NP, Arches NP, Canyonlands NP, Bryce Canyon, Zion NP (1 full day), Lake Powell, Monument Valley and Grand Canyon.
As I hope to have an extra week should I spend longer at some of these locations or can I include some extra locations. Any comments would be welcome.