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Half Marathons Found In & Near Cardiff

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Half Marathons In & Near Cardiff 2026 - 2027

Find your next challenge with the most comprehensive list of Half Marathons in and near Cardiff in 2026 - 2027. Enjoy a diverse mix of city runs and scenic country races in and around the Welsh capital. For even more options, discover more Half Marathon events in Swansea, Bristol, and Cheltenham.

Boost your training efforts for half marathons with Cardiff 10k races or take a look at an even bigger challenge with our calendar of Cardiff Marathons.

Top Tip: Viewing this page in the default “Featured View” will show you all the Best Half Marathons in and around Cardiff. 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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Wales

Wales

Race Calendar: Half Marathons In & Near Cardiff

Phoenix South Wales - Hug, Marry, RUN

Treharris, Mid Glamorgan
Sat 14 Feb 26
£22.00 - £35.00

St David's Day Dragon Run 2026

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

Phoenix South Wales - St David's Day Run

Cardiff, South Glamorgan
Sun 01 Mar 26
£22.00 - £35.00

St David's Day Run

Cardiff
Sun 01 Mar 26
£10.00 - £30.00
5.0

The Dashing Dog Charity Run - Wales

Dare Valley Country Park, Aberdare, CF44 7PS
Sun 15 Mar 26
£18.00 - £38.00

Phoenix South Wales - Cakeathon

Treharris, Mid Glamorgan
Sun 29 Mar 26
£22.00 - £35.00

Phoenix South Wales - Spinning Around

Treharris, Mid Glamorgan
Sat 25 Apr 26
£22.00 - £35.00

Phoenix South Wales - NOT The London Marathon

Cardiff, South Glamorgan
Sun 26 Apr 26
£22.00 - £35.00

The Nearly But Not Quite London Marathon - Wales

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

Radyr & Morganstown Half Marathon and Marathon

Cardiff
Sat 09 May 26
£40.00 - £50.00
4.8

Rocky at 50 Run - Wales

Dare Valley Country Park, Aberdare, CF44 7PS
Sat 30 May 26
£18.00 - £35.00

Phoenix South Wales - Manta Ray Run

Treharris, Mid Glamorgan
Sat 30 May 26
£22.00 - £35.00

Conquer Cardiff Summer 5k, 10k and Half Marathon

Cardiff
Sat 06 Jun 26
£25.00 - £30.00
4.6

Cheddar Gorge Challenge (Marathon, Half, 10km, 6km, Fun Runs)

Bristol, Somerset
Sun 14 Jun 26
£8.10 - £75.60
4.7

Phoenix South Wales - Butterfly Run

Treharris, Mid Glamorgan
Sat 11 Jul 26
£22.00 - £35.00

Wye Valley Tunnel Run (Marathon, Half, 10km, Colourburst)

Sedbury, Gloucestershire
Sun 19 Jul 26
£10.80 - £64.80
4.1

Ooops I Ran It Again - Wales

Dare Valley Country Park, Aberdare, CF44 7PS
Sat 25 Jul 26
£18.00 - £35.00

Phoenix South Wales - Rose Run

Treharris, Mid Glamorgan
Sat 01 Aug 26
£22.00 - £35.00

Phoenix South Wales - Kingfisher Run

Bargoed, Mid Glamorgan
Sun 02 Aug 26
£22.00 - £35.00

Chepstow Running Festival

Chepstow, Gwent
Sat 15 Aug 26
£30.00 - £36.00
4.3

Phoenix South Wales - Alice in Runderland

Treharris, Mid Glamorgan
Sat 12 Sep 26
£22.00 - £35.00

Phoenix South Wales - Are We There Yet?

Bargoed, Mid Glamorgan
Sun 13 Sep 26
£22.00 - £35.00

Quantock Hills Trail Half Marathon

Kilve Court - SSE Outdoors Kilve, Bridgewater Somerset, TA5 1EA
Sun 04 Oct 26
£34.70

Phoenix South Wales - Aberfan Memorial Run

Merthyr Tydfil, Mid Glamorgan
Sun 18 Oct 26
£22.00 - £35.00

Machen Trail Races: Half and Full Marathons

Caerphilly, Mid Glamorgan
Sat 28 Nov 26
£40.00 - £50.00
4.9

The Snow Globe Gallop Bobble Hat Run - Wales

Dare Valley Country Park, Aberdare, CF44 7PS
Sun 20 Dec 26
£26.00 - £40.00

The Cardiff 5k, 10k and Half Marathon Winter Warmer Run

Cardiff
Sun 01 Feb 26
£30.00 - £35.00
4.9
Showing 1-27 of 27 results

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