The 10th annual Walk On! Challenge launches February 1, 2015. In honor of this milestone anniversary, Blue Cross Blue Shield of Arizona is expanding the program to include fourth grade! As the largest health care provider in the state of Arizona, our goal is to educate and inspire fourth- and fifth-grade students, their teachers and their families to focus on healthy choices that can be made daily through the 5-2-1-0 goal. Registration for the 2015 Walk On! Challenge has closed. Tool kits will ship to registered schools in early January. To learn more about the 2015 Walk On! Challenge and the 5-2-1-0 goal, please choose from the Teacher or Parents tabs above.