The Swiss Football League is the top professional football league in Switzerland. It consists of two main divisions: the Super League and the Challenge League. The league features clubs from various cities, competing for the championship title and promotion to higher divisions. Founded in 1897, the league has a rich history and is governed by the Swiss Football Association. The season typically runs from July to May, with teams playing each other in a round-robin format. The league is known for its competitive nature and has produced several notable players and clubs over the years.