Career
Gianniotis, also claimed gold at the 2013 World Aquatics Championships in Barcelona in the men"s 10 km open water swimming. At the 2004 Olympic Games in Athens Gianniotis took the 5th place at the 1500 m freestyle and the 7th place at 400 m freestyle. At the 2012 Olympic Games in London he was 4th at the 10 km marathon swim, missing the bronze medal for only 5 seconds.