Arcadia Elementary students pledge Wednesday, Aug. 31, 2011, to walk to school regularly in Taylorsville. Students, parents, school officials and UDOT kicked off "Walk More in Four," an annual statewide safe walking and biking to school challenge. The competition, which encourages all Utah K-8 students to safely walk or bike to school at least three days each week during the four weeks in September, offers a $500 prize for the school with the most participation. Additionally, students chart their progress for a chance to win prizes including helmets, scooters and bikes.