July 2006, 135 competitors from 20 countries descend on San Pedro de Atacama for RacingThePlanet's six stage 250km self-supported foot race through the Atacama desert in Chile. Endless river crossings, ridges, slot canyons, dry river beds, hard salt flats, squishy salt flats, and the occasional dune, all contrived to cause havoc to feet, ankles and knees.