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Half Marathons Found in Wales

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Half Marathons In Wales 2025 - 2026

The most comprehensive list of Half Marathons in Wales in 2025 - 2026. Find your perfect race!

Top Tip: Viewing this page in the default “Featured view” will show you all the Best Half Marathons in and around Wales. If you’re ready to set yourself a challenge right now then switching to “Bookable view” will show you those that can be booked instantly and securely through Find A Race. Guarantee your place today and get training :-)


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Race Calendar: Half Marathons In Wales

🚀Boosted

PHOENIX - South Wales - Flamingo Run

Treharris, Mid Glamorgan
20 Jul 25
£22.00 - £39.95
🚀Boosted

The Cardiff 1.5k, 5k, 10k & Half Marathon MoRun

Cardiff
08 Nov 25
£12.00 - £30.00
5.0

My Little Care Bear Run - Wales

Dare Valley Country Park, Aberdare, CF44 7PS
19 Jul 25
£18.00 - £35.00

PHOENIX - South Wales - Flamingo Run

Treharris, Mid Glamorgan
20 Jul 25
£22.00 - £39.95

Ogwen | Yr Helgi Du Skyline

Betws-Y-Coed, Gwynedd
02 Aug 25
£31.99 - £74.99

Brecon Beacons Trails

Brecon, Talybont-on-Usk, Powys
09 Aug 25
£37.00 - £352.00

Chepstow Running Festival 5k, 10k & Half Marathon

Chepstow, Gwent
16 Aug 25
£28.00 - £142.00
4.3

Will Run For Ice Cream - Wales

Dare Valley Country Park, Aberdare, CF44 7PS
30 Aug 25
£18.00 - £35.00

SNOWDONIA SEA2SKY 25k & 53K ULTRA

Barmouth, Gwynedd
06 Sep 25
£57.00 - £85.00

Fraggle Run - Wales

Dare Valley Country Park, Aberdare, CF44 7PS
20 Sep 25
£18.00 - £35.00

Scare Bear Run - Wales

Dare Valley Country Park, Aberdare, CF44 7PS
18 Oct 25
£18.00 - £35.00

Afan Forest Trail Half Marathon & 10k

Bryn Bettws Lodge, Port Tolbot SA12 9SP
18 Oct 25
£31.36 - £36.59

The Giddy Horse: Backyard 24hr, 12hr, 8hr Races (Solo & Team) Plus Canicross, Night Races, Obstacle Course Race & Trail Races

Chepstow, Gwent
25 Oct 25 - 26 Oct 25
£25.92 - £216.00

The Cardiff 1.5k, 5k, 10k & Half Marathon MoRun

Cardiff
08 Nov 25
£12.00 - £30.00
5.0

Beacons Ultra, Marathon & Half Marathon

Brecon, Powys
08 Nov 25
£40.00 - £80.00

Smurf Run - Wales

Dare Valley Country Park, Aberdare, CF44 7PS
22 Nov 25
£18.00 - £35.00

Loggerheads Half Marathon

Loggerheads Country Park
29 Nov 25
£36.83 - £58.05

Machen Trail Races: Half and Full Marathons

Caerphilly, Mid Glamorgan
29 Nov 25
£40.00 - £50.00
4.8

Sea 2 Summit Half/Full/Ultra

Prestatyn Nova Centre
07 Dec 25
£33.63 - £54.86

A Christmas Carol Bobble Hat Run - Wales

Dare Valley Country Park, Aberdare, CF44 7PS
21 Dec 25
£18.00 - £40.00

Midwinter Mortimer Trail

Ludlow, Shropshire
27 Dec 25
£15.00 - £55.00

Spice Up Your Run - Wales

Dare Valley Country Park, Aberdare, CF44 7PS
24 Jan 26
£18.00 - £35.00

Chepstow Running Festival

Chepstow, Monmouthshire
25 Jan 26
£28.00 - £142.00
4.3

St David's Day Dragon Run 2026

Dare Valley Country Park, Dare, Aberdare, Wales, CF44 7PS
01 Mar 26
£18.00 - £35.00

Brechfa Trail Races

Carmarthen, Dyfed
14 Mar 26
£40.00 - £50.00

The Pendine Sands Races

Carmarthen, Carmarthenshire
05 Apr 26
£29.00 - £300.00
5.0

Bunny Hop Races - Virtual

Ross-on-Wye, Herefordshire
05 Apr 26
£30.00 - £39.00

Summit 2 Sea Half Marathon

Nova Centre, Prestatyn
12 Apr 26
Free - £35.76

The Nearly But Not Quite London Marathon - Wales

Dare Valley Country Park, Aberdare, CF44 7PS
26 Apr 26
£18.00 - £35.00

Radyr & Morganstown Half Marathon and Marathon

Cardiff
09 May 26
£40.00 - £50.00
4.8

Essar Chester Half Marathon

Chester, Cheshire
17 May 26
£40.80
5.0

Chepstow Running Festival

Chepstow, Gwent
15 Aug 26
£28.00 - £142.00
4.3

Ludlow10

Ludlow, Shropshire
13 Jul 25
£15.00 - £35.00

6 Geese a-laying Run – Virtual

Ross-on-Wye, Herefordshire
12 Dec 25
£25.00 - £39.00

9 Ladies Dancing – Virtual

Ross-on-Wye, Herefordshire
15 Dec 25
£25.00 - £39.00

10 Lords a Leaping – Virtual

Ross-on-Wye, Herefordshire
16 Dec 25
£25.00 - £39.00
Showing 1-34 of 34 results