Born in Rome on 11 February 1972, Giorgio Calcaterra began running in March 1982 in a non-competitive race as part of the Rome marathon. He is renowned not just for the quality of his running but also the quantity of races he competes in. In 2000 he set a world record for most marathons (20) completed in under 2 hours 20 minutes and established his personal best time of 2:13:15, at an average speed of 3:09 minutes per km. In 2006 he turned to the 100 km and won the Passatore, a race he would go on to win in each of the next 12 years, until 2017. Calcaterra has also set the all-time Passatore record of 6 hours 25 minutes, running at an average speed of 3:51 minutes per km. Giorgio won the 100 km World Championships in 2008, 2011 and 2012 and has finished third on two other occasions. In 2017 he was awarded the CONI medal for sporting merit.