Stefano Gregoretti was born in Rimini in 1974 and is an agronomist by profession. From a young age he swam and practised down-hill skiing in the Dolomites, before later delving into ski mountaineering, which he still prefers. He got involved in competitive sports in 2006, at the age of 32, when he began competing in triathlons. He has completed numerous Iron Man triathlons, which consist of a 3.8-km swim, a 180-km cycle and a 42-km run, both in Europe and the United States. Since 2008, he has embraced the sport that has become his undisputed passion and reason for being: trail running. In the space of just 5 years, his passion for the sport brought him to compete at national and international levels. He finished in second place in the 250 km Racing the Planet competition in Nepal (2011), and in the Grand to Grand Ultra, a 270 km race between the canyons of Utah and Arizona (2012). He finished first in the Yukon Arctic Ultra, a 100-mile race in the icy north of Canada (2013), and in the Gobi March, a 250 km race in the Gobi Desert in China, with Racing the Planet (2013). In April 2014, Stefano as well as Canadian ultrarunner Ray Zahab, and two other Canadian athletes, completed an almost impossible challenge in and amongst the glaciers of the Canadian arctic, on Baffin Island. It was a record-breaking effort: it took them just 47 hours to travel 150 km, including across the glaciers, while carrying a 40 kg sled, at 51 degrees below zero, and contending with the freezing arctic winds. In 2015, they embarked on another epic challenge: in 20 days they travelled 1000 km, 50 km per day on average, starting from the Atlantic coast the Patagonia desert, up to the Andes, to reach the Pacific.