Competitors take part in stage 5 of the 37th edition of the Marathon des Sables between Jdaid and Kourci Dial Zaid in the Moroccan Sahara desert, near Merzouga central Morocco, on April 28, 2023. - The 37th edition of the marathon is a live stage 250 kilometres race through a formidable landscape in one of the world's most inhospitable climates. (Photo by JEAN-PHILIPPE KSIAZEK / AFP)