Cardiff · United Kingdom
Half Marathon races near Cardiff
19 races in 2026
next one in 10 days
Race calendar
Upcoming Half Marathon races near Cardiff
JUL 3
11JUL
Run · road · Half Marathon
2025 Blacks 50 & 32 Mile Ultra, Marathon & Half Marathon
Longtown · 54 km away
11JUL
Run · road · Half Marathon
Black Mountains Ultra, Marathon, Half Marathon
Hereford · 54 km away
25JUL
Run · road · Half Marathon
Ooops I Ran It Again - Wales
Aberdare CF44 7PS · 33 km away
AUG 8
9AUG
Run · road · Half Marathon
Bath Two Tunnels Railway Races - August 2026
Bath BA2 1LX · 56 km away
16AUG
Run · road · Half Marathon
Frome Running Festival
Frome · 66 km away
+14 more Half Marathon racesShow fewer ↓
16AUG
Run · road · Half Marathon
Two Tunnels Railway Races (Ultra, Marathon, Half Marathon, 10km, 5km, Colourburst)
Bath · 50 km away
16AUG
Run · road · Half Marathon
South West Spartan Event Weekend
Badminton · 62 km away
16AUG
Run · road · Half Marathon
Cardiff Running Festival
Cardiff CF10 3ER · 1 km away
22AUG
Run · road · Half Marathon
Great British Bake Run - Wales
Aberdare CF44 7PS · 33 km away
29AUG
Run · road · Half Marathon
Cardiff Pentath-Run (CPR)
Cardiff
30AUG
Run · road · Half Marathon
Bridgwater Half Marathon
Bridgwater · 41 km away
SEP 8
6SEP
Run · road · Half Marathon
Westonbirt Arboretum Half, 10km, 5km & 1 Mile Fun Run
Tetbury · 73 km away
6SEP
Run · road · Half Marathon
Bridgwater Half Marathon & 10K
Bridgwater · 40 km away
13SEP
Run · road · Half Marathon
Chippenham Half Marathon
Wiltshire · 74 km away
13SEP
Run · road · Half Marathon
Burnham Half Marathon
Burnham-on-Sea · 29 km away
19SEP
Run · trail · Half Marathon
Badminton Trail Runs
nr Chipping Sodbury · 55 km away
26SEP
Run · road · Half Marathon
Sampford Peverell Half Marathon & 10K
Tiverton · 64 km away
27SEP
Run · trail · Half Marathon
Forest of Dean Autumn Half Marathon
Forest of Dean · 57 km away
27SEP
Run · road · Half Marathon
RUN Barnstaple Marathon, Half Marathon & 10K
BARNSTAPLE · 76 km away
Cardiff · 80 km
19 races mapped
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Recurring Half Marathon races near Cardiff
Races that repeat — weekly, monthly or yearly
Doughnut Dash - Wales
Run as far as you can in seven hours in Dare Valley Country Park. You'll receive a goody bag and a themed medal.
Cardiff Half Marathon
The Cardiff Half Marathon is a road race through Wales’ capital, run each year with a sell-out field of about 27,500 runners. It started in 2003 with 1,500 runners and is now the UK’s second largest half marathon, as well as Wales’ biggest mass-participation and multi-charity fundraising event.
The course is flat and fast, passing Cardiff Castle, the Principality Stadium, the Civic Centre and Cardiff Bay. The field stretches from first-timers and charity fundraisers to club runners and world-class athletes, with separate elite races for men, women and wheelchair racers. Crowds line the route in large numbers, and the race also sits in the SuperHalfs series alongside Lisbon, Prague, Berlin, Copenhagen and Valencia.
Weston Super Half
The Weston Super Half concludes on Weston-super-Mare’s Grand Pier, a distinctive feature distinguishing it from typical seaside half marathons. This autumn half marathon centers on Marine Parade in Weston-super-Mare, Somerset, and includes shorter races like the Community Mile and a Fun Run alongside the main event.
The course crosses the Weston coastline via closed roads, incorporates a segment on the beach, and passes through a nature reserve. Participants are treated to open sea views before reaching the pier for the finish. The event utilizes chip timing, retains historical results, and attracts charity runners, such as those fundraising for the Great Western Air Ambulance Charity with their "Make your seconds count" initiative.
Bath & Bristol Railway October
The Bath & Bristol Railway October is a running event held in Bath, England, during October. It takes place on and around the former railway corridor connecting Bath and Bristol. The event offers multiple distances, from a 2 km option up to 50 km, including 10 km, half marathon, 25 km, and marathon distances. Race conditions are typically autumnal, with average weather around 10.8°C, light wind, and high humidity.
The route utilizes a former railway line, incorporating transport history alongside the running course. This line, which opened in the nineteenth century and closed in the twentieth, was later repurposed by Sustrans as the initial route of the National Cycle Network. Bath provides a notable setting, being a UNESCO World Heritage site with proximity to Roman Baths and Georgian streets. The event's atmosphere reflects its local railway connection, with one participant describing it as “Sooo British.”
Scare Bear Run 2026 - Wales
Scare Bear Run is a themed running event in Wales, centered on a 7-hour time challenge. Participants select their own distance, starting with a minimum of 3km and adding laps as desired within the time limit.
A lap is 4.37 miles (7km), though the organizer might use a 3.28-mile loop if course conditions necessitate. Runners of all abilities are welcome, including walkers. The finisher's reward is a medal inspired by the Care Bears.
RTT Gower Trail Half Marathon & 10K
The Gower Trail Half Marathon & 10K takes place at Oxwich Bay, on the Gower Peninsula near Swansea, Wales. It marks the start of the RTT Series, offering runners their initial opportunity to earn points in the overall standings. The event features a self-navigated half marathon, alongside marked 10K and 5K routes. This race has been postponed; a new date is pending.
The routes traverse coastal paths, woodland trails, rough terrain, and sand dunes, emphasizing the need for route awareness in this trail race. The half marathon is entirely self-navigated with checkpoints, while the 10K and 5K routes are marked. The event includes chip timing, aid stations, checkpoints, and a finisher’s medal. The start times are staggered, with the half marathon beginning before the shorter races.
Cardiff Taff Trail Half Marathon
The Cardiff Taff Trail Half Marathon begins at Pontcanna Fields Car Park, directing runners into one of Cardiff’s primary green spaces. This chip-timed half marathon features online entry, an 08:30 start, and race-number collection prior to the start. With a 3-hour cutoff, it is structured as an efficient city race, not an extended trail excursion.
The course crosses Pontcanna Fields and Bute Park before proceeding north on the Taff Trail towards Tongwynlais. The majority of the route follows tarmac paths, with a brief compacted section. Aid stations are located at approximately 2.5, 6.25, and 10.25 miles. The event originated as a pilot and resumed post-Covid cancellations, offering Cardiff a smaller Taff Trail half to complement the city's larger October road race.
Stroud Half Marathon
The Stroud Half Marathon is a 13.1-mile road race held annually in Stroud, Gloucestershire. It begins at 9:00 from Cainscross Road, adjacent to Marling School's field, and concludes in the same vicinity. Organized by Race Nation Events, this half marathon features a course suitable for runners aiming for a fast time, as well as those running recreationally or for the first time.
The course is predominantly flat, with a slight incline encountered between miles 6 and 7. Runner feedback mentions quiet country lanes, open roads, and some unevenness. The measured route remains consistent year to year, and pacers have been provided. The event takes place concurrently with a Stroud 10k race. Parking is situated away from Marling School, with free town centre car parks typically a 10-15 minute walk from the start line.
Cardiff 1.5k, 5k, 10k & Half Marathon MoRun
MoRun Cardiff is a Movember running event held at Coopers Field in Bute Park, near the city end and central Cardiff. It features four distances on the same morning: a Half Marathon, 10k, 5k, and a 1.5k Mini MoRun for children and families. The Half Marathon begins first, followed by the 5k and 10k, with the Mini MoRun later. Registration opens early, race numbers and timing chips are collected on site, and all distances are chip timed with instant results at the finish.
The route follows the paths of Bute Park, with runners grouped by estimated finish time and staggered at the start to prevent path congestion. The field is broad: half marathon runners, 10k and 5k runners, children, families, friends, first-timers, fundraisers, and those attending for the Movember spirit. Fancy dress is part of the day, and participants are encouraged to grow a moustache or paint one on. Every finisher receives a MoRun medal and headband, with additional prizes for fastest MoBro, fastest MoSista, best dressed, and best Mo. The event supports Movember, raising money and awareness for prostate cancer, testicular cancer, mental health, and suicide prevention.
Cardiff 1,5 km, 5 km, 10 km & Semi-Marathon MoRun
The Cardiff MoRun takes place in November at Bute Park, Coopers Field, offering races of 1.5 km, 5 km, 10 km, and a half marathon. Races begin in the morning, and chip timing is used for all distances, including the children's Mini MoRun, providing runners with immediate results. The atmosphere is intentionally festive, with a clear structure: choose a short family-friendly run, a standard 5k or 10k, or the full 21.0975 km half marathon.
The courses cover Cardiff city grounds and public park areas. The 5k, 10k, and half marathon are each designed as single-loop routes. This event is part of the larger MoRunning series supporting Movember, which raises funds and awareness for men's health issues such as prostate cancer, testicular cancer, mental health, and suicide prevention. Participants can donate during registration or create a fundraising page. All MoRunners receive a medal and a MoRunning headband. The event welcomes everyday runners, families, children, and friends, not exclusively club racers.
Beacons Ultra, Marathon & Half Marathon
The Beacons Ultra, Marathon & Half Marathon is a November trail race weekend held at Henderson Hall in Talybont-on-Usk, situated at the foothills of the Brecon Beacons in Wales. Participants can select a 13-mile half marathon, a marathon, or an approximately 50-mile ultra. The longer race combines trail, mountain, canal, and road running.
The marathon follows one loop of the ultra course and includes a climb of Pen y Fan, while the half marathon route remains nearer to Talybont-on-Usk. Weather is a factor: the event has occurred in bright sunshine, rain, mist, and temperatures as low as minus 8 degrees. The broader Beacons ultra running context also features the 100-mile Beacons Way Ultra, a self-navigating race starting at Abergavenny Castle along the Beacons Way National Trail. This race has ten checkpoints, 6,143 metres of ascent, includes Pen y Fan and the Carmarthen Fans, uses GPS tracking, and requires prior mountain and ultramarathon experience for entry.
Afan Forest Half Marathon & 10K
Looking for something else near Cardiff?
Other races in the next 90 days
JUL 177 km away
cycling
Sheila Edwards Cup 10 Mile Time Trial - Jack Nunn No 7
JUL 265 km away
cycling
Sherston Velo Club 13.8
JUL 439 km away
other
Superhuman Games 2026
JUL 465 km away
cycling
Bristol South Cycling Club 50
JUL 529 km away
cycling
Welsh Time Trial Championships 2026
JUL 876 km away
cycling
Sporting 10 Mile time trial No 4 Malmesbury
JUL 854 km away
triathlon
SWMA Tri Series Race 3
JUL 1031 km away
cycling
Children’s Hospice South West Ride for Precious Lives
About Half Marathon races in Cardiff
Cardiff Training Notes
Cardiff hosts 49 Half Marathon races in 2026 within 80 km of the city centre — upcoming dates, recurring series, and other races nearby, all in one place.
locals keep the easy running close to the River Taff, with Bute Park, Pontcanna Fields, and Llandaff Fields giving you a big green block for Z2. Roath Park gives steady loops, and Roath Park lake also works with a loop around the reservoir. Cefn Onn and home again gives a 10k with a steep pull on Thornhill Road. Pegasus Running Club meets at Cathedral Green in Llandaff at 6:45pm for a 7pm start on Monday, Tuesday, and Wednesday evenings. Cardiff Half Marathon and Cardiff 10k are the anchor races, with Cardiff Summer Series keeping Pontcanna sharp.
locals ride because Cardiff is flat and compact in the middle, then hilly fast once you point north, east, or west. The Taff Trail runs 55 miles between Cardiff and Brecon, and it gives proper base miles without much faff. Cardiff Bay Trail gives over 10km around the Bay, and the Cardiff heritage loop gives 75km from the National Museum Cardiff. Cardiff Ajax Cycling Club meets at Maindy Centre, and Cardiff JIF cycling club members train on the Gwent levels and hills of South Wales. Caerphilly mountain, Garth Hill, Wattsville to Cwm Carn, and Penylan Hill bring the climbing; CARTEN100 is the anchor sportive.
Winter days give you about 6 hours of sunshine. Locals use those long evenings for intervals in Pontcanna, steady rides over the barrage, and Z2 along the Taff Trail. Winter changes the feel without killing the training, because Cardiff stays mild, wet, cloudy, and windy rather than properly frozen. The Taff Trail is beautiful in winter, but slippery leaves change the line, and the north of the county feels cooler and wetter while the south stays flatter and low-lying.