before the war and immediately after the war by winning bronze at Unofficial World Championships held in 1940 and 1946. In those same years, he also won his last two silver medals at the Norwegian Allround Championships. Twelve years after having won his 1,500 m Olympic gold medal, Mathiesen participated in the 5,000 m at the 1948 Winter Olympics in St. Moritz, but the relatively low oxygen levels at the ice rink there – located 1,856 m (6,089 ft) above sea level – caused him to have trouble breathing and 3,000 m into his 5,000 m race, he collapsed and was taken to a hospital. Medals An overview of medals won by Mathiesen at important championships he participated in, listing the years in which he won each: World records Over the course of his career, Mathiesen skated one world record: Source: SpeedSkatingStats.com Personal records To put these personal records in perspective, the WR column lists the official world records on the dates that Mathiesen skated his personal records. Mathiesen has an Adelskalender score of 189.345 points. His highest ranking on the Adelskalender was a second place. References External links Charles Mathiesen at SpeedSkatingStats.com Evert Stenlund's Adelskalender pages 1911 births 1994 deaths World record setters in speed skating Norwegian male speed skaters Olympic speed skaters of Norway Olympic gold medalists for Norway Speed skaters at the 1936 Winter Olympics Speed skaters at the 1948 Winter Olympics Olympic medalists in speed skating Medalists at the 1936 Winter Olympics World Allround Speed Skating Championships medalists Sportspeople from Drammen