I'm new to this site and have already found tons of useful infomation regarding research for my upcoming trip to Zion and Bryce this September. I currently live in NE Penn. where we have hills not mountains or high elevations. I have hiked extensively along the AT and have lots of backpacking experience but I'm wondering about altitudes out west. Our plan is to fly to Las Vegas and drive to Zion then Bryce and backpack/day hike at both. How will my body be ready for this challenge? Thanks.

