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.
- 01/03/2025 Rhayader Round the Lakes 10km & 30km
- 01/03/2025 St Davids Day 5km 10km Half Marathon Marathon & Ultra Marathon Dragon Runs @ Aberdare
- 02/03/2025 John Collins Gwent Cross Country League 5 of 5 (Juniors & Seniors) @ Brecon
- 02/03/2025 Newport Half Marathon
- 02/03/2025 Vault Cardiff
- 06/03/2025 European Indoor Athletics Championships @ Apeldoorn, Netherlands Until 9th March
- 08/03/2025 England U15 & U17 indoor combined events championships @ Sheffield Until 9th March
- 08/03/2025 British Cross Challenge 5 & UK Inter Counties Cross Country Championships @ Nottingham
- 09/03/2025 British Masters Half Marathon Championships @ Paddock Wood
- 09/03/2025 Welsh Schools U13 & U15 Sportshall Athletics Finals @ Cwmbran
- 09/03/2025 Cardiff 10 & 20 Mile Races
- 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
- 23/03/2025 West Glamorgan Cross Country League 5 of 5 (Seniors) @ Tairgwaith
- 30/03/2025 San Domenico 20 Mile & 10 Mile Races @ Merthyr Tydfil
- 05/04/2025 Neal Merry Swansea Harriers Open Meeting @ Swansea