609 in 2015 and later

648 past in 2015 (updated 17-07-'15)

9# Dunaújvárosi 24 órás úszás, Hungary

Date: 
Wednesday, 16 December, 2015 (All day) to Friday, 18 December, 2015 (All day)

12 h  December 16

24 h  December 17-18

http://uhuszok.atw.hu