The Creaky Knees Guide Arizona is a hiking guidebook filled with kinder, gentler trails. Here are 80 of the best easy-to-walk hikes throughout the state. Created for anyone who--regardless of age--can't or doesn't want to hike great distances over rough terrain to gain beautiful vistas and enjoy the wilderness. Most are day hikes, but there are a handful of backpack trips worthy of the Creaky Knees stamp of approval. Trails...