Half Marathon Calendar Wales 2025-2026

Sep

7

Sunday

Caernarfon Half Marathon

Caernarfon, Wales

21 km

Sep

20

Saturday

Abersoch Half Marathon

Abersoch, Wales

Trail Run Road Race 13 mi

Sep

20

Saturday

Saturn Running - Aberdare

Aberdare, Wales

Backyard Ultra 3 km 7 km ... 42 km 50 km

Sep

21

Sunday

Pumsaint Trail Half Marathon

Pumsaint, Wales

Trail Run 7 mi 21 km

Oct

5

Sunday

Cardiff Half Marathon

Cardiff, Wales

21 km

Oct

5

Sunday

Bangor City Half Marathon

Bangor, Wales

10 km 21 km

Oct

18

Saturday

Afan Forest Trail Half Marathon

Port Talbot, Wales

10 km 21 km

Oct

18

Saturday

Saturn Running - Aberdare

Aberdare, Wales

Backyard Ultra 3 km 7 km ... 42 km 50 km

Oct

25

Saturday

Giddy Horse Half Marathon, Trail, & Steeplechase Obstacle Course Races

Chepstow, Wales

Trail Run Obstacle Run 4 mi 8 mi 21 km

Nov

8

Saturday

Beacons Ultra

Talybont-on-Usk, Wales

Trail Run 13 mi 26 mi 49 mi

Nov

9

Sunday

Anglesey Trail Half Marathon

Llanfairpwllgwyngyll, Wales

Trail Run 10 km 21 km

Nov

15

Saturday

Margam Trail Races

Port Talbot, Wales

Trail Run 5 km 10 km 21 km

Nov

16

Sunday

Conwy Half Marathon

Conwy, Wales

13 mi

Nov

16

Sunday

Cardiff Trail Half Marathon

Tongwynlais, Wales

Trail Run 21 km

Nov

22

Saturday

Saturn Running - Aberdare

Aberdare, Wales

Backyard Ultra 3 km 7 km ... 42 km 50 km

Nov

29

Saturday

Loggerheads Half Marathon

Mold, Wales

Trail Run 21 km

Dec

6

Saturday

Secret Santa Tinsel Half Marathon

Black Mountains, Wales, Wales

Trail Run 14 km 21 km

Dec

7

Sunday

Sea 2 Summit - Offa's Dyke Half/Full/Ultra

Prestatyn, Wales

Trail Run 21 km 42 km 33 mi

Dec

13

Saturday

Celtic Trail Races

Aberdare, Wales

Trail Run 13 mi 26 mi 34 mi

Dec

20

Saturday

Nightmare before Xmas Trail ½ Marathon

Aberkenfig, Wales

Trail Run 21 km