Olympiads
| Year | Host Country | Host City | Countries | Contestants |
|---|
| 2026 |  Albania | Tirana | 18 | 75 |
| 2025 |  Italy | Udine | 16 | 69 |
| 2024 |  North Macedonia | Ohrid | 15 | 61 |
| 2023 |  Slovenia | Maribor | 17 | 72 |
| 2022 |  Romania | Bucharest | 16 | 63 |
| 2017 |  Moldova | Chisinau | 12 | 49 |
| 2014 |  Türkiye | Ankara | 12 | 50 |
| 2012 |  Serbia | Belgrade | 9 | 43 |
| 1999 |  Greece | Ioannina | 8 | 36 |