The Baltic Way mathematical contest has been organized annually since 1990, usually in early November, to commemorate the Baltic Way demonstration of 1989. Unlike most international mathematical competitions, Baltic Way is a true team contest. Each team consists of five secondary-school students, who are allowed and expected to collaborate on the twenty problems during the four and a half hours of the contest.
Originally, the three Baltic states participated, but the list of invitees has since grown to include all countries around the Baltic Sea; Germany sends a team representing only its northernmost parts, and Russia a team from St. Petersburg. Iceland is invited on grounds of being the first state to recognize the newfound independence of the Baltic states. Extra "guest" teams are occasionally invited at the discretion of the organizers: Israel was invited in 2001, Belarus in 2004 and 2014, Belgium in 2005, South Africa in 2011, the Netherlands in 2015 and Ireland in 2021. Responsibility for organizing the contest circulates among the regular participants.
- Forewords in Better (1997), Nummert, Willemson (2002), Villemoes (2007); see below.
- Lists of results in first reference below and web sites linked there and in the next two references.
- 2 teams from each of 3 countries - Estonia, Latvia & Lithuania.
- No tie-breaker rules were found for Baltic Way 1997.
- Norway was placed 4th, according to the tie-breaker rules of Baltic Way 2001.
- Estonia & Lithuania were placed 4th, according to the tie-breaker rules of Baltic Way 2007.
- Due to COVID-19 pandemic the 2020 edition was held virtually.
Estonian Math Competitions. "Baltic Way Mathematical Contests". Retrieved 2012-05-24.
Baltic Way contest web sites
Organisers, Baltic Way 2012. "Baltic Way '12, Tartu, Estonia". Retrieved 2013-01-31.
Organisers, Baltic Way 2013. "Mathematical Team Competition Baltic Way 2013". Retrieved 2016-03-13.
Organisers, Baltic Way 2016. "Baltic Way 2016, Mathematical group contest". Retrieved 2016-03-13.
Organisers, Baltic Way 2022. "Baltic Way 2022". Retrieved 2022-11-20.
Rasmus Villemoes (2007). Baltic Way 2002-2006. Problems and solutions. Århus, Denmark: Department of Mathematical Sciences, University of Aarhus. Art of Problem Solving Community. "International Competitions Baltic Way". Retrieved 2012-05-24.
IMO Compendium Group. "Baltic Way". Retrieved 2012-05-24.