Just like a normal swimming race, except this one had three obstacles including pole climbing and boats to climb onto and swim under. The event was held in a river, so in modern times competitors would probably be using trash, sewage and disease as their obstacles. Underwater swimming was held over a 60m distance with competitors awarded two points for every meter swum underwater and one point for each second under water. Hot Air BallooningTechnically a demonstration event and not an official sport, hot air ballooning was part of the 1900 Olympic Games. Town PlanningAt the four Olympic games between 1928 and 1948, medals were given out for town planning.

Source: Huffington Post February 28, 2019 23:26 UTC