| Event | Year | Start | End | Races | Teams |
|---|---|---|---|---|---|
| Trophée Jean-Michel Auclair | 2021 | 16 Oct | 17 Oct | 6 | 7 |
| Petermännchen | 2021 | 09 Oct | 10 Oct | 6 | 15 |
| KSSS Olympic Class Regatta | 2021 | 02 Oct | 03 Oct | 6 | 7 |
| Hayling Island | 2021 | 30 Sep | 03 Oct | 5 | 15 |
| North American Championship | 2021 | 30 Sep | 03 Oct | 12 | 31 |
| Oktoberfestpreis | 2021 | 25 Sep | 26 Sep | 1 | 13 |
| Finał MINUTOR Energia Puchar Polski | 2021 | 25 Sep | 26 Sep | 4 | 13 |
| CORK Fall Regatta & 505 Canadian championships | 2021 | 17 Sep | 19 Sep | 5 | 12 |
| EMK Syysregatta | 2021 | 11 Sep | 12 Sep | 4 | 15 |
| FAntastic Nepean FAll REgatta (FANFARE) | 2021 | 11 Sep | 12 Sep | 9 | 10 |
| Harris Bay Intergalactic 505 Regatta | 2021 | 11 Sep | 12 Sep | 7 | 12 |
| Kieler Woche | 2021 | 04 Sep | 05 Sep | 5 | 26 |
| Northvaal Championship | 2021 | 04 Sep | 05 Sep | 5 | 10 |
| Puchar Dziwnowa | 2021 | 04 Sep | 05 Sep | 13 | 7 |
| SWE 5o5 cup 1 | 2021 | 04 Sep | 05 Sep | 7 | 18 |
| Dansk Mesterskab | 2021 | 28 Aug | 29 Aug | 9 | 15 |
| OstseeCup | 2021 | 21 Aug | 22 Aug | 5 | 15 |
| Nepean One Design Regatta | 2021 | 14 Aug | 15 Aug | 6 | 11 |
| TPS Airisto Regatta | 2021 | 14 Aug | 15 Aug | 4 | 9 |
| Svenskt Mästerskap | 2021 | 13 Aug | 15 Aug | 8 | 29 |