| 2003 |
 Borovets, Bulgaria |
See Results |
| 2004 |
 Moscow, Russia |
See Results |
| 2005 |
 Leiden, Netherlands |
See Results |
| 2006 |
 Tartu, Estonia |
See Results |
| 2007 |
St. Petersburg, Russia |
See Results |
| 2008 |
Slanchev Bryag, Bulgaria |
See Results |
| 2009 |
 Wrocław, Poland |
See Results |
| 2010 |
 Stockholm, Sweden |
See Results |
| 2011 |
 Pittsburgh, United States of America |
See Results |
| 2012 |
 Ljubljana, Slovenia |
See Results |
| 2013 |
 Manchester, United Kingdom |
See Results |
| 2014 |
 Beijing, China |
See Results |
| 2015 |
Blagoevgrad, Bulgaria |
See Results |
| 2016 |
 Mysore, India |
See Results |
| 2017 |
 Dublin, Ireland |
See Results |
| 2018 |
 Prague, Czechia |
See Results |
| 2019 |
 Yongin, Republic of Korea |
See Results |
| 2021 |
 Ventspils, Latvia |
See Results |
| 2022 |
 Castletown, Isle of Man |
See Results |
| 2023 |
Bansko, Bulgaria |
See Results |
| 2024 |
 Brasília, Brazil |
See Results |