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 SOLD OUT
- 07/12/2025 Welsh Athletics Indoor Athletics U13 U15 & U17 Junior Open Meeting @ Cardiff
- 13/12/2025 Run4All 5km Santa Run @ Aberavon
- 14/12/2025 Merthyr Mawr 10km Multi Terrain Christmas Pudding Race SOLD OUT
- 14/12/2025 Festive 10km @ Cardiff SOLD OUT
- 14/12/2025 Cardiff Metropolitan University U17 U20 & Senior Open Meeting @ Cardiff
- 21/12/2025 CRPRC 5k Christmas Fun Run @ Pontardawe
- 26/12/2025 The Festive 5 Mile Boxing Day Race @ Glynneath
- 26/12/2025 Porthcawl Boxing Day Run 6.5km
- 28/12/2025 Old Father Time 5 Mile Road Race (Masters Only 35+) @ Cardiff
- 31/12/2025 Nos Galan 5km @ Mountain Ash SOLD OUT
- 10/01/2026 46th World Cross Country Championships @ Tallahassee, Florida, USA
- 11/01/2026 Welsh Athletics Indoor Athletics U13 U15 & U17 Junior Open Meeting @ Cardiff
- 17/01/2026 Welsh U13 U15 & U20 & Para Indoor Athletics Championships @ Cardiff incorporating the Welsh 3000m Championships Until 18th January
- 17/01/2026 England Athletics Indoor U20 & Senior Combined Events & Senior Para Championships (including Race Walking Championships & British Milers Club @ TBC Until 18th January
- 18/01/2026 West Glamorgan Cross Country League Round 3 of 5 @ Margam Park
- 18/01/2026 CF 6.4 Mile Multi Terrain Race @ Comeston Lakes, Penarth
- 24/01/2026 Welsh Clubs Cross Country Championships @ TBC