The 28th edition of the Marathon des Nations began 2018 . 1,024 runners will cover more than 220 km in six stages . `` Some runners come here to push back their limits and brave the extreme to write their tale , '' says Frenchman Patrick Bauer , who founded the race in the mid-1980s . The epic race is billed as the toughest marathon on Earth . It has to be entered several days in advance .
The 28th edition of the Marathon des Nations began 2018 . 1,024 runners will cover more than 220 km in six stages . The epic race is billed as the toughest marathon on Earth . It has to be entered several days in advance .