In the heart of the Tuscan-Emilian Appennines, in a natural wild environment, takes place the Bologna Marathon in Trail, a trail running race scheduled for Sunday, 3d October 2021, during the Natura World Sport Day, with the starting and finishing line at Villaggio della Salute Più (Monterenzio - Bologna).

The competition develops over two spectacular ring trails, one 30 km long and 1000 D + and the other 14 km long and 300 D +.