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Cardiff Half Marathon 2027: Everything You Need To Know
The Cardiff Half Marathon takes runners from the centre of the Welsh capital towards Penarth, across Cardiff Bay Barrage and around Roath Park before returning to a finish in the Civic Centre. It is a large, lively race with a predominantly flat course, strong charity presence and plenty to see along the way.
Cardiff is one of six races in the SuperHalfs series, alongside Lisbon, Prague, Berlin, Copenhagen and Valencia. It attracts runners working towards the six race challenge, as well as those chasing a personal best or taking on their first half marathon.
The Cardiff Half Marathon 2027 takes place on Sunday 3 October. General entries will be allocated through a ballot, although the organiser has announced other ways to secure a place. Here is what to know before you enter and plan your race weekend.
The Destination
Cardiff is a compact capital that suits a running weekend. Cardiff Castle and the Civic Centre sit close to the race start and finish, while the Principality Stadium, city centre streets and Cardiff Bay give visitors plenty to explore.
The Bay has a different feel from the historic centre. Its waterfront is home to the Senedd, Wales Millennium Centre and Norwegian Church, all landmarks associated with the half marathon route. Roath Park offers another change of scene, with its lake forming part of the later miles.
If you are aiming for a particular finishing time, think about how much walking you want to do before race day. Cardiff makes sightseeing easy, but the castle, waterfront and parks will still be there after you have finished.
History Of The Cardiff Half Marathon
The Cardiff Half Marathon began in 2003, when around 1,500 runners took part. It has grown into one of Europe’s largest half marathons, attracting a substantial mass participation field alongside elite athletes. Fundraising has also become a central part of its identity.
Cardiff hosted the World Half Marathon Championships in 2016 and the Commonwealth Half Marathon Championships in 2018. Its place in the SuperHalfs series has since introduced the race to more runners planning a journey across Europe.
Who Organises The Cardiff Half Marathon?
The Cardiff Half Marathon is organised by Run 4 Wales, which delivers other running events in Wales. You may see a sponsor’s name attached to the race in event branding, but Cardiff Half Marathon is the name used throughout this guide.
When Is The Cardiff Half Marathon 2027?
The organiser has confirmed that the Cardiff Half Marathon 2027 will take place on Sunday 3 October. The supporting junior races are listed for Saturday 2 October.
Race start times and the full weekend schedule for 2027 have yet to be confirmed. Early October can bring good running conditions, but Cardiff may also be wet or windy. Check the forecast during race week and use the final runner instructions for timings and travel arrangements.
Cardiff Half Marathon Race Packs And Event Village
Cardiff does not usually require UK entrants to visit an expo to collect their number. For the 2026 race, UK race packs are posted, while overseas entrants collect theirs from the Event Village on Cardiff City Hall Lawns. The village also provides an information point and other race weekend facilities.
The organiser has not yet published the full 2027 collection schedule. If you are travelling from overseas, allow enough time to collect your pack and check the final collection requirements before booking an arrival close to race day. UK entrants should also read the organiser’s instructions on what to do if a posted pack has not arrived.
Race Morning
The current race starts on Castle Street outside Cardiff Castle and finishes on King Edward VII Avenue in the Civic Centre. For 2026, runners are assigned colour coded starting pens, with groups released at different times. The Event Village is on City Hall Lawns, close to the start and finish areas.
Those arrangements provide a useful basis for planning, but your 2027 race pack and runner guide should determine where and when you need to arrive. Allow time to reach your pen, use the toilets and deal with any bag drop. With a field this large, arriving in the area does not mean you are immediately ready to start.
Road closures will also affect travel across Cardiff. If you are staying outside the centre, plan your journey to the start before race morning and check the transport information issued for 2027.
Cardiff Half Marathon Course
Cardiff’s current route is predominantly flat and takes in more of the city than the castle start might suggest. Runners pass two major stadiums, head towards Penarth, cross Cardiff Bay Barrage, run through the Bay and loop around Roath Park Lake before finishing in the Civic Centre.
The detailed 2027 route has not yet been published. Use the organiser’s 2027 map when it becomes available, particularly if you are planning where supporters should watch. The description below follows the route currently shown by the organiser.
The Castle Start And Opening Miles
Starting outside Cardiff Castle gives the race an immediate sense of occasion. The early section takes runners away from the city centre past the Principality Stadium and towards Cardiff City Stadium. Those opening miles can feel exciting and busy. If you have a time target, let the field settle rather than weaving through other runners to recover a few seconds. A controlled start will matter much more later in the race.
Towards Penarth
The course continues towards Penarth and its marina. This section takes runners away from the dense city centre crowds and towards the waterfront that gives Cardiff’s route much of its character. The race is predominantly flat, although it is not completely level. If an incline interrupts your planned pace, hold a steady effort rather than trying to force the same split on every part of the course.
Across Cardiff Bay Barrage
Cardiff Bay Barrage is one of the race’s defining stretches. After the roads towards Penarth, runners cross the open waterfront before heading into Cardiff Bay. There are also ramps on the approach to the Bay, which are worth bearing in mind if you are expecting an entirely level course. The views can be memorable, but the barrage may feel exposed on a windy day. If you meet a headwind, focus on your effort instead of judging the whole race by one difficult split.
Through Cardiff Bay
In Cardiff Bay, the route passes the Norwegian Church, Senedd and Wales Millennium Centre. It is a striking change from the stadiums and roads of the opening miles, and one of the clearest reasons that the Cardiff Half feels like a tour of the city. Enjoy the surroundings, but keep enough in reserve for the journey north and the final approach to the Civic Centre.
Around Roath Park
The course then heads north for a loop around Roath Park Lake. By this stage, maintaining your pace may take more concentration than it did along the waterfront. The park provides a useful landmark in the second half of the race. Once you have completed the loop, your attention can turn to the route back towards central Cardiff.
The Final Miles And Fairoak Road
After Roath Park, runners head back towards the city centre. Fairoak Road brings a steep hill at about mile 12, when tired legs can make even a short climb feel demanding. Cardiff is predominantly flat, but this is a section worth remembering if you are pacing for a particular time. After Roath Park, runners head back towards the city centre. Fairoak Road brings a short, noticeable climb at about mile 12, when tired legs can make it feel harder than its length suggests.
The Civic Centre Finish
The current course finishes on King Edward VII Avenue in Cardiff’s Civic Centre. Returning to the heart of the city gives the race a strong conclusion after the stadiums, Penarth, Cardiff Bay and Roath Park. Check the final 2027 map for the finish approach and agree a meeting point with supporters in advance. The area around the line and Event Village will be busy.
How Difficult Is The Cardiff Half Marathon Course?
Cardiff is a comparatively approachable half marathon from an elevation perspective. Much of the route is flat, and the variety of landmarks gives runners useful points to aim for as the miles pass.
That does not mean every mile feels the same. A large field can make the start crowded, the barrage can be windy and Fairoak Road presents a notable climb late in the race. Cardiff rewards runners who start sensibly and judge their effort by the conditions on the day.
What Makes The Cardiff Half Marathon Special?
The course connects parts of Cardiff that offer very different race experiences. It begins beside a medieval castle, passes major sporting venues, crosses an open barrage and returns through a waterfront district and a city park. That variety helps distinguish it from a half marathon run mainly on broad roads.
Fundraising is another defining feature. The organiser describes Cardiff as Wales’ largest mass participation and multi charity fundraising event, and more than 100 official charities are associated with the race. SuperHalfs runners add an international element to an event with a strong Welsh identity.
Is Cardiff Half Marathon A Fast Course?
Yes, Cardiff offers genuine personal best potential. Its predominantly flat profile is a good starting point, and the scale of the field means many runners will have others around them aiming for a similar time.
The best approach is to treat “fast” as an opportunity rather than a promise. Crowding, wind, Fairoak Road and pacing can all affect your result. Leave room to run well through the second half instead of spending your energy trying to make the first few miles perfect.
Is Cardiff Half Marathon Good For First Time Runners?
Cardiff can be an excellent first half marathon for a runner who has prepared for the distance. Much of the course is flat, there is plenty of company on the route and the changing scenery can help break 13.1 miles into manageable sections.
Its size does mean there is more to organise than at a small local race. Read the instructions for your start pen, race pack, travel and baggage arrangements, then give yourself enough time on the morning. The organiser’s 2027 entry information specifies a four hour course cut off and a minimum age of 17 on race day.
Cardiff Half Marathon And The SuperHalfs
Cardiff is one of six races in the SuperHalfs series, alongside Lisbon, Prague, Berlin, Copenhagen and Valencia. Runners can complete the races in any order and work towards receiving a SuperMedal after finishing all six.
If Cardiff is part of your challenge, create your free SuperPassport and enter its number when registering. Check that your results appear in your account as you progress through the series, particularly if you are planning several races across different years.
How To Enter The Cardiff Half Marathon 2027
General entry for Cardiff 2027 is through a ballot. The organiser has confirmed separate UK and international ballots. Applying is free; successful runners are charged for their entry. The listed entry prices are £59 for the UK ballot and £70 for the international ballot, with an additional booking fee.
The organiser says the 2027 ballot will close at midnight on Sunday 18 October 2026, with results announced on Thursday 22 October. Check the official registration page for the current ballot status and application details.An opening date is not yet stated on its registration page, which currently offers a ballot reminder service. Check that page for the opening announcement before trying to apply.
There are also limited ways to secure a place without waiting for the ballot. The organiser lists an NSPCC fundraiser entry with a £300 fundraising pledge, 1,500 places for eligible Welsh Athletics members and several event bundles. Registration through other official charities, tour operators and SuperVouchers is due to open when ballot results are announced. Availability and terms vary, so check the option you intend to use before paying or committing to a fundraising target.
Running The Cardiff Half Marathon For Charity
Cardiff is particularly well suited to runners who want their race to support a cause. The event has more than 100 associated charities, and fundraising teams are a visible part of its atmosphere.
You can seek a charity place if you need an entry, or use a place you already hold to fundraise for a charity of your choice. These are different arrangements: a charity place may come with its own registration fee and fundraising commitment, while fundraising with your own place gives you more choice over the cause and the terms.
For 2027, the organiser has announced an early NSPCC entry option for runners pledging to raise £300. Other official charity entry options are due to open on ballot results day. Speak to the charity directly about its available places, registration process and fundraising expectations before you commit.
Our Verdict
Cardiff offers an appealing mix of a fast course and a race that feels connected to its destination. The castle start, waterfront crossing, Roath Park loop and Civic Centre finish each give runners something distinct to remember.
It is a strong choice for a first half marathon or a personal best attempt, and an especially meaningful option if you want to fundraise. Fairoak Road adds a late challenge, but it does little to diminish the appeal of the wider course.
Demand has made entry planning more important, so the first step for anyone targeting 2027 is to watch the ballot timetable or choose an official alternative that suits their plans.
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