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.
- 25/09/2021 British Schools U17 International Wales V England V Scotland V Ireland @ Derby
- 26/09/2021 Corsham 10km
- 26/09/2021 Welsh Masters 35+ to 80+ Championships @ Swansea
- 26/09/2021 Cardiff Bay 10km
- 03/10/2021 London Marathon
- 03/10/2021 London Mini Marathon U13 U15 & U17
- 10/10/2021 Birmingham 10km & Half Marathon
- 10/10/2021 Bournemouth Half Marathon
- 16/10/2021 Gwent Cross Country League (All Ages) @ LLandaf Fields, Cardiff
- 16/10/2021 British Cross Challenge Round 1 @ Cardiff
- 17/10/2021 Swansea Half Marathon
- 17/10/2021 British Masters Marathon Championships @ York
- 17/10/2021 Weston-Super-Mare Half Marathon
- 24/10/2021 Newport Marathon & 10km
- 31/10/2021 Llanelli Half Marathon
- 07/11/2021 Richard Burton 10km @ Cwmavon
- 07/11/2021 Welsh Athletics & Welsh Schools U13, U15/16 & U18/20 Indoor Combined Events @ Cardiff
- 13/11/2021 Gwent Cross Country League (All Ages) @ TBC
- 13/11/2021 British Cross Challenge Round 2 @ Milton Keynes
- 20/11/2021 Welsh Inter Schools Cross Country & Welsh Inter Regional Championships @ Brecon