Do You Need A Backpack For A 5 K?

Do You Need A Backpack For A 5 K? Comfortable running shoes and synthetic or wool running socks. Your race bib and safety pins. A comfortable, weather-appropriate race top, bra and botttom. GPS watch. Protection from chafing. Sunscreen. A water bottle or hydration system. Nutrition products. Should you run with a backpack on? What should