Charytatywny Bieg is a charity half marathon from Rybno to Kiernozia in central Poland, also known as Bieg Przyjaźni, or the Friendship Run. It begins in the morning at the Municipal Office in Rybno and raises funds for Pani Karolina, a Kiernozia resident receiving treatment for malignant stomach cancer.
The course starts on Długa Street by the Rybno municipal office and concludes on the parish grounds of St. Margaret in Kiernozia. The event emphasizes community support over racing prestige: participants register locally or by phone, engage in a group warm-up before the start, and convene afterward for food and commemorative tokens.