The longest course open water race for men and women alike will take place on the last day of the open water swimming tournament. The 25 km race is the event which has featured the World Championships programme for the longest (since 1991).
In men’s 25km altogether 28 swimmers will race, including title holder Simone Ruffini of Italy and his compatriot Matteo Furlan who won a bronze medal two years ago. Hungarian fans can cheer on Gergely Gyurta and Kristóf Rasovszky.
· Simone Ruffini (ITA) hopes to become the second swimmer to win multiple world titles in men's 25km event.
· Yuri Kudinov (RUS) is the only one who has achieved this so far, having won four times in a row from 2000 to 2003.
· Italy has won men's 25km event twice, so did Australia and the United States. Only Russia (6) has achieved more wins so far.
· At the last three editions of the World Championships a total of nince medals in men's 25km were clinched by nine different swimmers.
· 7 out of 9 medals were won by different nations, it was only Italy and Russia (both two) which could claim more than one medal out of 9 in 2011, 2013 and 2015 combined.
· Chip Peterson (USA) returns to the World Championships for the first time since 2010. He won three medals, including gold in men's 10km in 2005.
· Peterson also took silver in men's 5km in 2005 and 2006 and he could become the sixth swimmer to win a medal in all three men's individual events - men's 5km, 10km, 25km - after Thomas Lurz (GER), Vladimir Dyatchin (RUS), Evgeny Drattsev (RUS), David Meca (ESP) and Evgueni Kochkarov (RUS).
· Lurz is the only swimmer to have won gold in all three men's individual events.
· Germany, Italy and Russia are the only countries to have won world titles in men's three individual events.