I woke up feeling stiff and disoriented when the bus jerked to a stop. For a few seconds, I had no idea where we were as I stared out onto what looked like an Arctic ice-sheet shimmering under a full moon. Then I remembered after a bumpy eight-hour drive from the Gujarat capital, Ahmedabad, we had finally reached the Great Rann of Kutch, 7,500 sq km of grey-white salty marshes, that extend over Kutch district in Gujarat and Sindh Province in Pakistan. Here, in the largest salt desert of the world, the government of Gujarat and an international team of sporting enthusiasts had organised a major sporting event three ultra trail races across one of the harshest landscapes in the world a half marathon (21 km) and full marathon (42 km) and an ultra endurance trail (101 km).