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.
- 14/03/2026 Nant Yr Arian Silver Trail Races 10km & Half Marathon
- 15/03/2026 West Glamorgan Cross Country League Round 5 of 5 @ Gnoll Country Park
- 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
- 22/03/2026 Merthyr Half Marathon
- 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
- 05/07/2026 Porthcawl 10km
- 23/07/2026 Commonwealth Games @ Glasgow Until 2nd August
- 04/08/2026 World U20 Athletics Championships @ Eugene, Oregan, USA Until 9th August
- 10/08/2026 European Athletics Championships @ Birmingham Until 16th August
- 06/09/2026 Cardiff 10km
- 04/03/2027 European Indoor Athletics Championships @ Valencia, Spain Until 7th March
- 14/07/2028 XXXIV Olympic Games Los Angeles, California, USA Until 30th July