been there, went riding, cant wait to go back..! Theres a bike shop in scottsdale we hired bikes from (cant remember the name) but they had a book of mtb trails in and aronud scottsdale – In a month we wouldnt have finished the book. The old Cactus cup trails are around scottsdale too, well worth riding.
This time of year the heat is incredible (so dry) and also youll have to look out for rattlesnakes and scorpions esp early in the morning as thy come out to cool down… Oh and you must have gel in your tyres cactus thorns are everywhere and will go through anything…
Enjoy and start counting the days till you go back!
On a tourist note the grand canyon is a must, with a stop off at sedona on the way, Tucson studios (in the opposite direction) is great, and dodge and tombstone arent that far away. I seem to recall the mountain in Close Encounters is in arizona too but could be wrong…
Oh and if youve got a full bike licence hire a harley and go ride through a desert!