| Event | Year | Start | End | Races | Teams |
|---|---|---|---|---|---|
| Energa Nord Cup Gdańsk | 2026 | 27 Jun | 28 Jun | 5 | 11 |
| KZN Regional Championship | 2026 | 14 Jun | 16 Jun | 2 | 13 |
| YSS-Cup SWE 505 Cup 2 | 2026 | 12 Jun | 14 Jun | 6 | 12 |
| Elvstrom Zellerbach | 2026 | 06 Jun | 07 Jun | 6 | 7 |
| Tampereen Regatta | 2026 | 06 Jun | 07 Jun | 10 | 4 |
| Wickford Regatta | 2026 | 06 Jun | 07 Jun | 8 | 10 |
| Internationale Deutsche Meisterschaft | 2026 | 04 Jun | 07 Jun | 10 | 31 |
| Puchar Polskiego Związku Żeglarskiego | 2026 | 29 May | 31 May | 9 | 10 |
| Pfingstwettfahrten | 2026 | 23 May | 24 May | 1 | 12 |
| Saltsjöbadsregattan | 2026 | 16 May | 17 May | 6 | 11 |
| Blue Garden Riva Cup | 2026 | 14 May | 16 May | 8 | 43 |
| Spring Regatta | 2026 | 09 May | 10 May | 6 | 13 |
| Wittensee Fight | 2026 | 25 Apr | 25 Apr | ||
| P&B 505 UK Inland Championships | 2026 | 18 Apr | 19 Apr | 6 | 9 |
| Frühjahrswettfahrten | 2026 | 18 Apr | 19 Apr | 5 | 18 |
| Euro Cup Series Leg 1 | 2026 | 03 Apr | 05 Apr | 10 | 42 |
| Midwinter Championship | 2026 | 06 Mar | 08 Mar | 9 | 9 |
| E. E. Manning Regatta | 2026 | 01 Mar | 02 Mar | 3 | 12 |
| Australian National Championships | 2026 | 17 Jan | 23 Jan | 9 | 30 |
| Carl Miller Fall Regatta | 2025 | 25 Oct | 26 Oct | 3 | 6 |