Registration fees hover around $36,000 and include business class or chartered airfare from Antarctica to Australia. Runners must finish each marathon within eight hours, or the plane will leave them behind. Temperatures throughout the course range from -4° Fahrenheit (-20° Celsius) in Union Glacier, Antarctica to 77° Fahrenheit (25° Celsius) in Sydney, Australia. To date, only 27 individuals have taken on this challenge, and all of them finished.
For most people, running even one marathon is an accomplishment -- imagine running seven. Created in 2015, the World Marathon Challenge is the world's only race that takes participants through seven marathons on seven continents in seven days.