13 July 1913

On July 13, 1913, Swiss aviator Oskar Bider flew his Bleriot XI-b monoplane over a 230 km route from Bern to Milan, making in the process the first crossing of the Alps. He crossed the high Alps exactly at the midpoint between the Jungfrau (4,166 m) and the Mönch (4,105 m). He also made the return flight, thus crossing the range in both directions.