Are hangovers and running a 5K route on a Saturday morning mutually exclusive? Given Poland's vibrant party scene and high alcohol consumption rates, events like this make us wonder if it's all the same people—or if there's a whole separate population of super healthy marathon runners living amongst us that only come out bright and early in the mornings, and then go back into hiding in the later hours of the day. Regardless of which category you fall into, you can stretch your running skills—this free event is open to people of all levels. Join them in Ks. Józef Poniatowski Park on Inżynierska Street.