| 23 May 2026 | 13:00 | Open | Ed Sports Russell Court Trophy B | Castleknock 3 | v | Lucan 3 | Porterstown Park |
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| 24 May 2026 | 13:00 | Open | Division 14 | Laois 3 | v | Castleknock 3 | Stradbally |
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| 30 May 2026 | 13:00 | Open | Ed Sports Russell Court Trophy B | Castleknock 3 | v | Laois 3 | Porterstown Park |
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| 01 Jun 2026 | 14:00 | Open | Ed Sports Russell Court Trophy B | Railway Union 5 | v | Castleknock 3 | Park Avenue |
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| 06 Jun 2026 | 13:00 | Open | Division 14 | Castleknock 3 | v | Swords 3 | Porterstown Park |
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| 13 Jun 2026 | 13:00 | Open | Division 14 | Castleknock 3 | v | North Kildare 5 | Porterstown Park |
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| 20 Jun 2026 | 13:00 | Open | Division 14 | Lucan 3 | v | Castleknock 3 | St Catherine's Park |
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| 04 Jul 2026 | 13:00 | Open | Division 14 | Pembroke 5 | v | Castleknock 3 | Wesley College 1 |
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| 11 Jul 2026 | 13:00 | Open | Division 14 | Castleknock 3 | v | Wexford Wanderers 2 | Porterstown Park |
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| 18 Jul 2026 | 13:00 | Open | Division 14 | Tullamore 1 | v | Castleknock 3 | Tullamore RFC |
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| 25 Jul 2026 | 13:00 | Open | Division 14 | Castleknock 3 | v | Laois 3 | Porterstown Park |
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| 08 Aug 2026 | 13:00 | Open | Division 14 | Castleknock 3 | v | Tullamore 1 | Porterstown Park |
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| 15 Aug 2026 | 13:00 | Open | Division 14 | Wexford Wanderers 2 | v | Castleknock 3 | Wexford RFC |
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| 23 Aug 2026 | 12:30 | Open | Division 14 | North Kildare 5 | v | Castleknock 3 | The Maws 2 |
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| 29 Aug 2026 | 12:30 | Open | Division 14 | Castleknock 3 | v | Lucan 3 | Porterstown Park |
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