The Lake Geneva Swimming Association (LGSA) is globally recognized for authenticating open-water swims in Lake Geneva on the French-Swiss border. The LGSA facilitates and adjudicates swim attempts under the rules of the LGSA, and upholds the spirit of open-water marathon swimming, established and respected since the beginning of the sport. Notable swim routes include the iconic LGSA Signature, along the full length of Lake Geneva, and the LGSA Classique, traversing its width.