Swimming through the icy waters of Antarctica, 3.8 kilometers to be exact, followed by a 180 kilometers bike ride and 42.2 kilometer run across that same continent completely hidden under a thick layer of snow and ice. Bizarre conditions for Dane Anders Hofman, who in 2020 already managed to complete a Long Distance in Antarctica, facing very tough circumstances to race. A documentary was made about his journey (Project Iceman) and you can watch that documentary here:
