| Event | Date |
|---|---|
| First Round | 1 – 26 September 2025 |
| Start of the Second Round | 1 October 2025 |
| SOI Workshops | October – November 2025 |
| End of the Second Round | 30 November 2025 |
| SOI Camp | 7 – 14 February 2026 |
| Finals | 21/22 March 2026 |
| Team-Selection | 22/23 and 29/30 May 2026 |
| WEOI in Luxembourg | 26 – 28 June 2026 |
| EGOI in Italy | 12 – 18 May 2026 |
| IOI in Uzbekistan | 9 – 16 August 2026 |