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.
- 16/03/2025 Llanelli Half & Full Marathons
- 16/03/2025 Merthyr Half Marathon
- 20/03/2025 World Masters Indoor Athletics Championships, Gainesville, Florida, USA Until 30th March
- 21/03/2025 World Indoor Athletics Championships @ Nanjing, China Until 25th March
- 22/03/2025 U15 & U17 Wales V England V Scotland V Ireland Schools Cross Country International @ Callandar Park, Falkirk, Scotland
- 22/03/2025 Nant Yr Arian Silver Trail Half Marathon & 10km incorporating the Welsh Senior & Masters Championships
- 22/03/2025 Welsh Seniors & Masters Road Relays @ Pembrey Country Park
- 23/03/2025 West Glamorgan Cross Country League 5 of 5 (Seniors) @ Tairgwaith
- 23/03/2025 Shaftesbury Barnet Harriers Throws Open 1 of 2 @ Hendon
- 23/03/2025 CF64 Winter Race 10.3km Multi Terrain @ Penarth
- 29/03/2025 Shaftesbury Barnet Harriers Throws Open 2 of 2 @ Hendon
- 29/03/2025 Feisty Phoenix Multi Terrain @ Bargoed
- 30/03/2025 San Domenico 20 Mile & 10 Mile Races @ Merthyr Tydfil
- 04/04/2025 North Wales Open Meeting @ Deeside
- 05/04/2025 Neal Merry Swansea Harriers Open Meeting @ Swansea
- 05/04/2025 Basingstoke & Mid Hants AC Young Athletes Open @ Basingstoke
- 06/04/2025 Gorseinon 10km
- 06/04/2025 Swindon Harriers Open Meeting
- 06/04/2025 Liverpool Harriers Open Meeting
- 06/04/2025 Bristol Track Club 5K