| Contest | Country | Venue | Duration |
| ioi89 | BUL | Pravetz | May 16-May 19 |
| ioi90 | BLR | Minsk | Jul 15-Jul 21 |
| ioi91 | GRE | Athens | May 19-May 25 |
| ioi92 | GER | Bonn | Jul 12-Jul 21 |
| ioi93 | ARG | Mendoza | Oct16-Oct 25 |
| ioi94 | SWE | Haninge | Jul 03-Jul 10 |
| ioi95 | NED | Eindhoven | Jun 26-Jul 02 |
| ioi96 | HUN | Veszprem | Jul 25-Aug 02 |
| ioi97 | RSA | Cape Town | Nov 30-Dec 09 |
| ioi98 | POR | Setubal | Sep 05-Sep 12 |
| ioi99 | TUR | Antalya | Oct 02-Oct 09 |
| ioi2000 | CHN | Beijing | Sep 23-Sep 30 |