There are 50 upcoming 10k races in Wales listed. Next up: Abergele 5K & 10K (Sunday, 18 October 2026), RTT Gower Trail Half Marathon & 10K (Sunday, 18 October 2026), Phoenix South Wales - Zombie Run (Saturday, 31 October 2026).
Upcoming races only, soonest first. Confirm dates and entry details with the organiser.
Pensarn · Abergele Pensarn North Wales
Flat coastal races starting on the Abergele/Pensarn promenade. Enter the 5K, the 10K or both distances on the same day. Check the separate start times before booking the double.
£26–£48
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Oxwich · Oxwich Bay, Swansea, Wales, SA3 1LS
Coastal trail events from Oxwich Bay on the Gower Peninsula. The half marathon requires self-navigation; the 5K and 10K routes are marked. Starts and registration closing times differ by distance.
£21.99–£41.99
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Pontypridd · Bike Doctor, Pontypridd, CF37 2PE, United Kingdom
Phoenix South Wales - Zombie Run is organised by Phoenix Running South Wales in Pontypridd. Entry options: 7 Hour Timed Challenge Including 5km, 10km, Half Marathon, Marathon, Ultra; NO MEDAL - 7 Hour Timed Event Including 5km, 10km, Half Marathon, Marathon, Ultra.
£22–£35
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Colwyn Bay · Porth Eirias
Porth Eirias 10K & Kids 1K Fun Run takes place in Colwyn Bay on 31 October 2026. Check the organiser’s page for the route, start arrangements and eligibility.
£23.10–£25.20
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Ruthin · Bwlch Penbarras, Ruthin, CH7 5, United Kingdom
Excalibur Winter Trail Races: 10km and 17km is organised by Excalibur Trail Races in Ruthin. Entry options: Excalibur Trail Races Winter 10KM; Excalibur Trail Races Winter 17km; Winter Excalibur 17km; Winter Excalibur 10km.
£35–£40
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Cardiff · North Road, Cardiff CF10 3DX, UK
The Cardiff 1.5k, 5k, 10k & Half Marathon MoRun is organised by The Fix Events UK in Cardiff. Entry options: 5k MoRun; 10k MoRun; Half Marathon. The course surface has not been confirmed.
£30–£35
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Swansea · Oxwich, Swansea, SA1 1, United Kingdom
Endurancelife Gower is organised by Endurancelife in Swansea. Entry options: 10K; Half Marathon; Marathon; Ultra. The course surface has not been confirmed.
£35–£71
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Oxwich · Oxwich Bay
Coastal trail races based around Oxwich, with 10 km, half-marathon, marathon and ultra categories. Route lengths can differ from standard road-race distances; check the organiser’s course and kit requirements.
£35–£71
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Cardiff · Harbour Drive, Cardiff, CF10 4, United Kingdom
Phoenix South Wales - Lest We Forget 2026 is organised by Phoenix Running South Wales in Cardiff. Entry options: 7 Hour Timed Event Including 5km, 10km, Half Marathon, Marathon, Ultra.
£35
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Port Talbot · Margam Park East gate,
Trail Half Marathon Wales takes place in Port Talbot on 14 November 2026. Organised by Trail Revolution. Published venue: Margam Park East gate,. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£34–£38
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Aberdare · Dare Valley Country Park, Aberdare, CF44 7PS
Timed running challenge at Dare Valley Country Park, with distances from 3 km to ultra. Runners and walkers are welcome; age-based distance limits apply.
£18–£34
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Treharris · Taff Bargoed Angling Association, Treharris, CF46 6RD, United Kingdom
Phoenix South Wales - Cheeky Fox is organised by Phoenix Running South Wales in Treharris. Entry options: 7 Hour Timed event including 5km, 10km, Half Marathon, Marathon, Ultra.
£35
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Dwygyfylchi
Guided Trail Run - Sychnant Pass takes place in Dwygyfylchi on 29 November 2026. Organised by Out Fit. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£19.50
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Newport · Rodney Parade, Rodney Road, NP19 0UU
A closed-road 10K based at Rodney Parade. Check the organiser’s final event guide for the start arrangements, route and race-number collection.
£33.60
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Merthyr Tydfil · CF48 1UT, Merthyr Tydfil, United Kingdom
Phoenix South Wales - Christmas Advent Run is organised by Phoenix Running South Wales in Merthyr Tydfil. Entry options: 7 Hour Timed Event Including 5km, 10km, Half Marathon, Marathon, Ultra.
£35
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Pontrhydyfen · Bryn Bettws Lodge, Pontrhydyfen, Port Talbot SA12 9SP
RTT Afan Forest Trail 10k & 5K takes place in Pontrhydyfen on 29 November 2026. Organised by Aspire X Events. Published venue: Bryn Bettws Lodge, Pontrhydyfen, Port Talbot SA12 9SP. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£26.99–£31.99
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Gwersyllt
Alyn Waters Winter Trails - 5k & 10k takes place in Gwersyllt on 05 December 2026. Organised by Out Fit. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£19–£21.50
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Mumbles · Oyster Wharf, Mumbles Road, Swansea, SA3 4DN
The Great Christmas Fun Run takes place in Mumbles on 06 December 2026. Organised by Aspire X Events. Published venue: Oyster Wharf, Mumbles Road, Swansea, SA3 4DN. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£21.99–£27.99
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Aberdare · Dare Valley Country Park, Aberdare, CF44 7PS
The Snow Globe Gallop Bobble Hat Run - Wales takes place in Aberdare on 20 December 2026. Organised by Saturn Running. Published venue: Dare Valley Country Park, Aberdare, CF44 7PS. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£18–£39
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Pontypridd · Connected Kerb, Gyfeillon Road, Pontypridd, CF37 2PP, United Kingdom
Phoenix South Wales - Frozen Phoenix 2026 is organised by Phoenix Running South Wales in Pontypridd. Entry options: 7 Hour Timed event including 5km, 10km, Half Marathon, Marathon, Ultra.
£35
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Chepstow · Chepstow Racecourse, Chepstow, Monmouthshire, NP16 6EH
Races at Chepstow Racecourse on a mixture of tarmac and trail, starting and finishing in front of the grandstand.
£29.40–£35.70
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Aberdare · Dare Valley Country Park, Aberdare, CF44 7PS
The Milkshake Meander - Wales takes place in Aberdare on 24 January 2027. Organised by Saturn Running. Published venue: Dare Valley Country Park, Aberdare, CF44 7PS. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£18–£35
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Cardiff · Bute Park, North Road, Cardiff, UK
The Cardiff 5k, 10k and Half Marathon Winter Warmer Run is organised by The Fix Events UK in Cardiff. Entry options: 5 km; 10 km; Half Marathon. The course surface has not been confirmed.
£25–£30
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Caerphilly · 31 Coed Main, Caerphilly, CF83 1RS, United Kingdom
Caerphilly Trail 5k and 10k is organised by Ridge Runners in Caerphilly. Entry options: Caerphilly Trail 10k; Caerphilly Trail 5k.
£29–£34
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Ruthin · Ruthin Leisure Centre
Ruthin 5K-10K takes place in Ruthin on 28 February 2027. Check the organiser’s page for the route, start arrangements and eligibility.
£19.95–£22.05
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Aberdare · Dare Valley Country Park, Dare, Aberdare, Wales, CF44 7PS
St David's Day Dragon Run 2027 takes place in Aberdare on 28 February 2027. Organised by Saturn Running. Published venue: Dare Valley Country Park, Dare, Aberdare, Wales, CF44 7PS. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£18–£35
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Mold · Loggerheads Country Park
Loggerheads Trail 5k & 10k takes place in Mold on 06 March 2027. Organised by Out Fit. Published venue: Loggerheads Country Park. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£19.50–£23
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Aberdare · Dare Valley Country Park, Aberdare, CF44 7PS
Running 9 to 5 - Wales takes place in Aberdare on 14 March 2027. Organised by Saturn Running. Published venue: Dare Valley Country Park, Aberdare, CF44 7PS. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£18–£35
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Nant Yr Arian
Trail Race organised by Aberystwyth Athletic Club in Nant Yr Arian. Online entry deadline: Wednesday 10th March 2027 at 21:00. Published meeting-location reference: ///follow.playfully.clasping.
£25–£40
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Pontypridd · Connected Kerb, Gyfeillon Road, Pontypridd, CF37 2PP, United Kingdom
Phoenix South Wales - Hedgie Hog Jog is organised by Phoenix Running South Wales in Pontypridd. Entry options: 7 Hour Timed event including 5km, 10km, Half Marathon, Marathon, Ultra.
£35
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Gorseinon · Penyrheol Leisure Centre, Gorseinon, SA4 4FG
Community road race on closed roads in Gorseinon, with a separate 2km family run. Supports Morgan’s Army and Noah’s Ark Children’s Hospital Charity. The main 10km starts at 09:00; check final instructions for the family-run start.
£34.10
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Carmarthen · Pendine Sands, Carmarthen, UK
The Pendine Sands Races is organised by Every Mile Counts in Carmarthen. Entry options: Half Marathon; 10 km; 5 km. The course surface has not been confirmed.
£30–£40
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Newport
A flat festival of running in Newport with marathon, 10K and mile races.
Price not confirmed
Haverfordwest · Little Haven, Haverfordwest, Wales, United Kingdom
Endurancelife Pembrokeshire is organised by Endurancelife in Haverfordwest. Entry options: 10K; Half Marathon; Marathon; Ultra.
£35–£71
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Cardiff · Coopers Field - Bute Park, Off North Road, Cathays, CF10 3ER
A 10km fundraising run for Cancer Research UK at Coopers Field - Bute Park in Cardiff. Participants can run, jog or walk at their own pace. The organiser asks each participant to aim to raise £50.00.
£8.74
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Caerphilly · Crescent Rd
Caerphilly 10K & 2K 2027 takes place in Caerphilly on 09 May 2027. Check the organiser’s page for the route, start arrangements and eligibility.
£25–£27
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Llangollen · Llangollen Leisure Centre
Llangollen 10K 2027 takes place in Llangollen on 09 May 2027. Check the organiser’s page for the route, start arrangements and eligibility.
£18.90–£21
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Aberystwyth · The Bandstand, Marine Terrace, The Promenade, Ceredigion, SY23 2BX
A 10km fundraising run for Cancer Research UK at The Bandstand, Marine Terrace in Aberystwyth. Participants can run, jog or walk at their own pace. The organiser asks each participant to aim to raise £50.00.
£8.74
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Ruthin
Town to Tower 10k - Ruthin to Moel Famau UPHILL Race takes place in Ruthin on 15 May 2027. Organised by Out Fit. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£21.50
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Swansea · Museum Park, Swansea, SA1 1SN
A 10km fundraising run for Cancer Research UK at Museum Park in Swansea. Participants can run, jog or walk at their own pace. The organiser asks each participant to aim to raise £50.00.
£8.74
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Margam · Margam Country Park, Wales
MARGAM PARK - WILD TRAIL RUNS 2027 takes place in Margam on 23 May 2027. Organised by Wild Deer Events. Published venue: Margam Country Park, Wales. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£24–£28
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Barmouth · Barmouth Harbour
Barmouth 10k 2027 takes place in Barmouth on 12 June 2027. Check the organiser’s page for the route, start arrangements and eligibility.
£24–£26
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Treharris · B4255, Treharris, CF46 6, United Kingdom
PHOENIX - South Wales - D-Day Military Series Run is organised by Phoenix Running South Wales in Treharris. Entry options: 7 Hour Timed event including 5km, 10km, Half Marathon, Marathon, Ultra; NO MEDAL - 7 hour timed challenge including 5km, 10km, Half Marathon, Marathon, Ultra.
£22–£35
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Bangor · Bangor, Gwynedd, North Wales. LL57 1NW
Bangor City 10K & Half Marathon takes place in Bangor on 13 June 2027. Organised by Run Wales. Published venue: Bangor, Gwynedd, North Wales. LL57 1NW. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£36–£48
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Hundred House · Hundred House, Builth Wells, LD1 5RY
Hundred House 10k 2027 takes place in Hundred House on 20 June 2027. Organised by Builth and District Running Club. Published venue: Hundred House, Builth Wells, LD1 5RY. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£14–£16
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Cardiff · 149 King George V Dr E, Cardiff CF14 4EN, UK
Inflatable 5K - Cardiff is organised by UK Running Events in Cardiff. Entry options: 5K; 2.5K; 10K; 15K. The course surface has not been confirmed.
£24.50–£51.50
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Rhyl · The Arena, The Promenade, LL18 3AQ
A 10km fundraising run for Cancer Research UK at The Arena in Rhyl. Participants can run, jog or walk at their own pace. The organiser asks each participant to aim to raise £50.00.
£8.74
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Chepstow · Chepstow Racecourse, Chepstow, Monmouthshire, NP16 6EH
Races at Chepstow Racecourse on a mixture of tarmac and trail, starting and finishing in front of the grandstand.
£29.40–£35.70
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Wrexham · Queensway Stadium, Wrexham LL13 8UH, UK
A closed-road race starting and finishing at Queensway Stadium.
£39.90
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Dale · Dale, Haverfordwest, SA62 3RB
Pembrokeshire Half Marathon & 10K takes place in Dale on 26 September 2027. Organised by Pembrokeshire Tri Club. Published venue: Dale, Haverfordwest, SA62 3RB. Check the organiser’s booking page for the full route, start arrangements, age requirements and current entry conditions.
£30–£35
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Work out your target 10k time and pace.