| 2026 | Circuit | International Ordinary | F4 | United Arab Emirates | Abu Dhabi | 17/01 | 18/01 | |
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| 2026 | Electric Powerboating | UIM E1 World Championship | UIM E1 | Saudi Arabia | Jeddah | 23/01 | 24/01 | |
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| 2026 | MotoSurf | World Championship | Elite Men, Electric Challenge, Elite Women, Junior (boys), Junior (girls), Masters Men, Masters Women, Stock Men | United Arab Emirates | Fujairah | 27/03 | 29/03 | |
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| 2026 | Aquabike | World Series | Circuit – Runabout GP1 , Circuit – Ski Division GP1, Circuit – Ski Ladies GP1, Freestyle | TBA | TBA | 01/04 | 04/04 | To be confirmed |
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| 2026 | Aquabike | World Championship | Endurance | TBA | TBA | 01/04 | 04/04 | To be confirmed |
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| 2026 | Offshore | World Championship | XCAT | United Arab Emirates | Fujairah | 17/04 | 19/04 | |
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| 2026 | Pleasure Navigation | World Championship | Boat Production 300 (B), Promotion 150 (P) , Sport 450 (S), HOCR F1, HOCR F2, HOCR F3, HOCR Sport, HOCR Super Sport | Malta | Sliema Promenade | 17/04 | 19/04 | |
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| 2026 | Electric Powerboating | UIM E1 World Championship | UIM E1 | Italy | Lake Como | 24/04 | 25/04 | |
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| 2026 | Aquabike | International Ordinary | Circuit classes, Endurance Classes | Croatia | Rijeka | 25/04 | 25/04 | |
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| 2026 | Aquabike | International Ordinary | Circuit classes, Endurance Classes | Croatia | Rijeka | 26/04 | 26/04 | |
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| 2026 | Circuit | Formula World Championship | Endurance S3 | France | Poses | 01/05 | 03/05 | |
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| 2026 | Aquabike | International Ordinary | Circuit classes, Endurance Classes | Croatia | Zagreb | 02/05 | 02/05 | |
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| 2026 | Aquabike | International Ordinary | Circuit classes, Endurance Classes | Croatia | Zagreb | 03/05 | 03/05 | |
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| 2026 | Circuit | World Championship | River Marathon Jet Boat Class A, River Marathon Jet Boat Class CX, River Marathon Jet Boat Class FX, River Marathon Jet Boat Class Unlimited | United States | Emmett to St. Maries (ID) | 08/05 | 17/05 | |
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| 2026 | Circuit | APBA World | EVO GPS 95 | United States | Emmett to St. Maries (ID) | 08/05 | 17/05 | |
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| 2026 | Aquabike | International Ordinary | Circuit classes | Hungary | Dunaharaszti | 09/05 | 10/05 | |
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| 2026 | Circuit | Formula Continental Championship | FR1000 | Czech Republic | Jedovnice | 15/05 | 17/05 | |
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| 2026 | Circuit | Formula World Championship | F125, F250, F500 | Czech Republic | Jedovnice | 15/05 | 17/05 | |
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| 2026 | MotoSurf | World Championship | Elite Men, Electric Challenge, Elite Women, Junior (boys), Junior (girls), Masters Men, Masters Women, Stock Men | Slovakia | Bratislava | 15/05 | 17/05 | |
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| 2026 | Aquabike | International Ordinary | Circuit classes | Czech Republic | Matylda Lake | 22/05 | 24/05 | |
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| 2026 | Circuit | Formula World Championship | F125, F250, F500 | Poland | Znin | 29/05 | 31/05 | |
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| 2026 | All Disciplines | Aquabike-Circuit-Pleasure Navigation-Offshore | International Raid - Pavia/Venezia | Italy | Pavia/Venice | 29/05 | 31/05 | |
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| 2026 | Circuit | Formula World Championship | F1 | TBA | TBA | 29/05 | 31/05 | To be confirmed |
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| 2026 | Aquabike | International Ordinary | Circuit classes | Hungary | Nőtincs | 30/05 | 31/05 | |
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| 2026 | Circuit | Formula World Championship | F2, F4 | Lithuania | Klaipėda | 05/06 | 07/06 | |
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| 2026 | Aquabike | International Ordinary | Circuit classes, Endurance Classes | Croatia | Vodice | 06/06 | 06/06 | |
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| 2026 | Aquabike | International Ordinary | Circuit classes, Endurance Classes | Croatia | Vodice | 07/06 | 07/06 | |
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| 2026 | Electric Powerboating | UIM E1 World Championship | UIM E1 | Croatia | Dubrovnik | 12/06 | 13/06 | |
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| 2026 | Circuit | Formula World Championship | F125, F250, F500 | Italy | Boretto | 12/06 | 14/06 | |
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| 2026 | MotoSurf | World Championship | Elite Men, Electric Challenge, Elite Women, Junior (boys), Junior (girls), Masters Men, Masters Women, Stock Men | Turkey | TBA | 12/06 | 14/06 | To be confirmed |
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