The 45th "La Petroniana" is a non-competitive walk on the Bolognese Hills. Participants can choose between a 15.3 km or an 8.0 km route. The walk starts at 9:00 AM from the Faculty of Engineering, Viale del Risorgimento, Bologna. The registration fee is €5.00, with all proceeds donated to the charity BIMBOTU ETS. The event offers scenic views of the Bolognese landscape along a historic route.