Registration for a 5k walk and 10k run starts at 7 a.m., Sunday, Oct. 17. The 10k starts at 7:30 a.m. The 5k starts at 9 a.m. Live entertainment will also be featured. The event is a pledge-based fundraiser that helps provide services such as medications assistance, food programs, case management, housing, prevention programs, HIV testing and more. Visit www.aidswalktucson.org for more information.