Usually after about an hour of running your body has used up all it’s readily available energy. Sugar is a quick energy source that is easy to burn. Gummy bears, skittles or other candies are popular. I just ran a half marathon with honey packs. Gels -common name brands GU and Clif shots- are specifically made for athletes to refuel. A quick google or Runner’s World search should help you out.
Usually after about an hour of running your body has used up all it’s readily available energy. Sugar is a quick energy source that is easy to burn. Gummy bears, skittles or other candies are popular. I just ran a half marathon with honey packs. Gels -common name brands GU and Clif shots- are specifically made for athletes to refuel. A quick google or Runner’s World search should help you out.