| 25 Apr 2026 | 13:00 | Open | Division 17A | Castleknock 5 | v | Adamstown 10 | Porterstown Park |
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| 03 May 2026 | 13:00 | Open | Division 17A | Castleknock 5 | v | Balbriggan 5 | Porterstown Park |
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| 09 May 2026 | 13:00 | Open | Division 17A | Dundalk 3 | v | Castleknock 5 | Hiney Park |
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| 16 May 2026 | 13:00 | Open | Division 17A | Castleknock 5 | v | County Cavan 3 | Porterstown Park |
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| 23 May 2026 | 17:00 | Open | Adamstown Cup - Group C | Castleknock 5 | v | Tullamore 2 | Porterstown Park |
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| 24 May 2026 | 13:00 | Open | Division 17A | Castleknock 5 | v | North Kildare 6 | Porterstown Park |
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| 30 May 2026 | 17:00 | Open | Adamstown Cup - Group C | Adamstown 10 | v | Castleknock 5 | Airlie Park |
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| 07 Jun 2026 | 14:00 | Open | Adamstown Cup - Group C | Castleknock 5 | v | Naas 3 | Porterstown Park |
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| 14 Jun 2026 | 13:00 | Open | Division 17A | Adamstown 10 | v | Castleknock 5 | Airlie Park |
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| 20 Jun 2026 | 14:00 | Open | Adamstown Cup - Group C | North Kildare 6 | v | Castleknock 5 | The Maws 2 |
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| 28 Jun 2026 | 13:00 | Open | Adamstown Cup - Group C | Swords 7 | v | Castleknock 5 | Ringcommons |
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| 05 Jul 2026 | 13:00 | Open | Division 17A | Balbriggan 5 | v | Castleknock 5 | Jack Harper Ground |
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| 12 Jul 2026 | 13:00 | Open | Division 17A | Tullamore 2 | v | Castleknock 5 | Tullamore RFC |
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| 18 Jul 2026 | 13:00 | Open | Division 17A | Castleknock 5 | v | Dundalk 3 | Porterstown Park |
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| 03 Aug 2026 | 13:00 | Open | Division 17A | Castleknock 5 | v | Tullamore 2 | Porterstown Park |
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| 08 Aug 2026 | 13:00 | Open | Division 17A | North Kildare 6 | v | Castleknock 5 | The Maws 2 |
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| 23 Aug 2026 | 12:30 | Open | Division 17A | Castleknock 5 | v | Swords 6 | Porterstown Park |
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| 29 Aug 2026 | 12:30 | Open | Division 17A | County Cavan 3 | v | Castleknock 5 | Cavan RFC |
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| 12 Sep 2026 | 12:00 | Open | Division 17A | Swords 6 | v | Castleknock 5 | Newbridge Demesne |
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