Ferenc Szõnyi is the fifth man in the world to have completed the double deca ironman competition: 76 kms of swimming, 3,600 kms cycling and 844 kms running. it took him 481 hours, 54 minutes and 10 seconds to finish this race.

Hungary's Ferenc Szõnyi won the world's longest triathlon race, the Double Deka World Challenge 2010 in Monterrey, Mexico, swimming, bicycling and running a distance of over 4,500 kilometers. Last year, he was the world's best in the 10-time triathlon