In case of any competition changes please keep checking back and the links to organisers websites. Only UK Athletics / Welsh Athletics licenced events are listed.
- 06/12/2025 British Schools U16 & U18 Indoor Combined Events International @ Glasgow
- 06/12/2025 John Collins Cross Country League U11 to Masters 3 of 5 @ Blaise Castle, Bristol
- 07/12/2025 Aberystwyth 10km
- 07/12/2025 Welsh Athletics Indoor Athletics U14 U16 & U18 Junior Open Meeting @ Cardiff
- 10/01/2026 46th World Cross Country Championships @ Tallahassee, Florida, USA
- 11/01/2026 Welsh Athletics Indoor Athletics U14 U16 & U18 Junior Open Meeting @ Cardiff
- 17/01/2026 Welsh Junior & Para Indoor Athletics Championships @ Cardiff Until 18th January
- 24/01/2026 Welsh Clubs Cross Country Championships @ TBC
- 07/02/2026 John Collins Cross Country League U11 to Masters 4 of 5 @ Chepstow Race Course
- 07/02/2026 Welsh Senior & Para Indoor Athletics Championships @ Cardiff Until 8th February
- 25/02/2026 Welsh Secondary Schools & Colleges Cross Country Championships @ Brecon
- 28/02/2026 John Collins Cross Country League U11 to Masters 5 of 5 @ Parc Bryn Bach, Tredegar
- 08/03/2026 Llanelli 10km, Half Marathon & Full Marathon
- 20/03/2026 World Indoor Athletics Championships @ Kujawy Pomorze, Poland Until 22nd March
- 21/03/2026 SIAB British Schools U15 & U17 Cross Country International @ Vaynol Park, Pentir, Gwynedd
- 28/03/2026 Welsh Seniors 4 Stage & Masters 3 Stage Road Relay Championships @ Parc Bryn Bach
- 19/04/2026 Newport 10km Half Marathon & Marathon
- 26/04/2026 London Marathon
- 10/05/2026 Caerphilly 10km
- 07/06/2026 Swansea Half Marathon