The Cardiff Half Marathon 2026 will bring thousands of runners to the city.¹ It's one of the country's most popular running events, and runners from the UK, Europe, and beyond will all tackle the 13.1-mile race.² Whether you're running, supporting, or just thinking about it. Here's everything you need to know.
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Cardiff Half Marathon
Event Overview
- The Cardiff Half Marathon 2026 is scheduled for Sunday, 4 October 2026, in the Welsh capital.
- The event attracts thousands of runners each year, including first-time participants, experienced marathon runners, and international visitors travelling to Wales.
- The course travels through central Cardiff and nearby districts, passing well-known landmarks such as Cardiff Castle, Cardiff Bay, and the Principality Stadium.
- Many runners secure their entry through charity places, helping raise funds for national and local organisations across Wales.
- With wide city streets and relatively gentle elevation, the route is often considered suitable for runners aiming for a strong finishing time.
- Crowds gather throughout the city centre and along the course, creating a lively race-day atmosphere for runners and spectators alike.
Before you sign up to any of the UK's most popular races, you should know all the key details. You can use this information to plan accommodation, travel, and training. Here's all the key information for the event.
Date and Time
Cardiff Half Marathon 2026 takes place on Sunday, 4 October 2026.³
The main race is scheduled to start at 10:00 AM in central Cardiff.
Elite wheelchair athletes usually begin shortly before the main race.
Runners start in staggered wave pens to manage the large number of participants.
Race packs are typically collected from the Event Village near Cardiff City Hall during race weekend.
Location
The race starts outside Cardiff Castle on Castle Street in the city centre.
The finish line is located on King Edward VII Avenue near Cardiff’s Civic Centre.
The route travels through central Cardiff before heading toward Cardiff Bay and Penarth Marina.
Runners complete a section around Roath Park Lake before returning toward the city centre.
The Event Village and race hub are located on City Hall Lawns, close to the finish area.
Race Categories
Ballot Entry – the main method runners use to secure a place due to high demand.
Charity Places – runners can obtain guaranteed entry by committing to fundraising for an official charity partner.
Tour Operator Packages – international runners can book travel packages that include race entry.⁴
Business Challenge – companies can enter teams of runners representing their organisation.
Elite Athlete Field – the race attracts elite international runners competing for podium places.
Registration Details
As a popular race, it's worthwhile signing up as soon as you can. While it mightn't be as popular as the massive London Marathon, many choose to secure their place through the official ballot. In contrast, charity places allow them to secure a bib while also committing to raising a certain amount for charity. If you're set on securing a spot, here's what you need to know.
Cardiff Half Marathon 2026 Registration Dates
Registration for the Cardiff Half Marathon 2026 is expected to open on 1 March 2026 and close on 31 August 2026. However, places may sell out earlier due to high demand. Because the race attracts thousands of runners from across Wales, the UK, and Europe, securing an entry early is strongly recommended. Charity places may still be available after general registration closes for runners who commit to fundraising for an official partner.
Runners must register through the official Cardiff Half Marathon website.⁹
How to Register
Runners must register through the official Cardiff Half Marathon registration portal.
The race operates a ballot system because demand for places is extremely high.
Participants submit their personal details and payment information when entering the ballot.
If selected in the draw, runners are automatically confirmed and charged the entry fee.
Guaranteed entries may also be available through charity places, tour operators, or business challenge packages.
Entry Fees
Entering the Cardiff Half Marathon ballot is free of charge.
Successful UK ballot applicants typically pay around £58 plus a booking fee.
International ballot entries usually cost about £70 plus booking fees.
Registration Deadlines
Ballot registration usually opens several months before the race date in October.
The ballot closes once the official entry window ends and the draw is conducted.
Entry details can typically be edited or transferred until around mid-August before race day.
Charity entries may remain available after the ballot closes if places are still open.
Because the event attracts tens of thousands of runners, early registration is strongly recommended.
Course Information
The Cardiff marathon route is a scenic run through Cardiff. What's not to love? Run past some of the city's most recognisable landmarks. If you're looking for other capital ideas, there's also the Edinburgh Marathon in the Scottish capital that offers a beautifully scenic coastal route, too!
Route Description
The Cardiff Half Marathon route follows the half-marathon distance of 13.1 miles (21.1 km).⁵
The race begins near Cardiff Castle in the city centre and heads south toward Cardiff Bay.
Runners pass through the waterfront area before crossing the Cardiff Bay Barrage.
The course then heads north through the city toward Roath Park.
After completing a loop around Roath Park Lake, runners return to the Civic Centre for the finish.
Elevation and Terrain
The Cardiff Half Marathon route is known for being relatively flat and fast.⁸
The entire course takes place on paved city roads and waterfront routes.
Elevation changes are minimal, with only gentle gradients in a few sections of the course.
Wide streets allow runners to maintain a steady pace throughout much of the race.
Because of its terrain, the race is popular among runners aiming for personal bests.
Landmarks Along the Route
Cardiff Castle marks the start of the race in the city centre.
Runners pass the Principality Stadium, one of Wales’ most famous sporting venues.
The route travels through Cardiff Bay and across the Cardiff Bay Barrage.
Participants pass landmarks such as the Wales Millennium Centre and Norwegian Church Arts Centre.
A scenic section loops around Roath Park Lake before the race finishes near Cardiff City Hall.
Charity Participation
Fundraising is a key part of most of the country's organised runs and marathons, from the enjoyable Manchester Marathon to the Cardiff Half Marathon. Running for a charity is often an easier way to secure a bib.⁶ Look for charities that are official partners for your best chances of getting a spot and raising money for good causes across Wales and the UK.
Official Charity Partners
| Charity | Focus Area | Notes |
|---|---|---|
| Alzheimer's Society | Dementia research & support services | Official charity of the AJ Bell Great Run Series |
| British Heart Foundation | Heart & circulatory disease research | Offers charity places in the Great Bristol Run |
| Kidney Research UK | Medical research & patient support | Runs charity teams at the event |
| Action for ME | Myalgic encephalomyelitis support | Provides charity places for fundraising runners |
| Bristol Animal Rescue Centre | Animal rescue & rehoming | Supports rescue and rehabilitation of animals across the region |
| Great Western Air Ambulance Charity | Emergency medical response | Supports emergency services across the Bristol region |
| Bristol Bears Community Foundation | Local sports & community | Receives fundraising support through event runners |
How to Run for a Charity
Secure a guaranteed entry by applying for a charity place.
Commit to a fundraising target set by the organisation.
Register directly through the charity’s event page.
Many charities provide fundraising advice, running tips, and team support before the race.
Charity teams often meet on race day and run together while wearing branded shirts.
Fundraising Tips
Create an online fundraising page so friends and family can donate easily.
Share your training progress on social media to encourage supporters to contribute.
Organise community events such as raffles, bake sales, or sponsored runs.
Ask local businesses or employers if they can sponsor your challenge.
Start fundraising early to give yourself time to reach your target before race day.
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Training and Preparation
Whether this is your first time or you're an experienced runner, you should always train. It'll make a big difference on the day. Nutrition and hydration also go a long way toward making the run easier and preventing injury. It doesn't matter whether you're running a marathon like the coastal Brighton Marathon or a half in Cardiff, you'll feel the benefits of every training session (and the punishment of every skipped session) as you do the run!
Training Plans
Most Cardiff Half Marathon runners follow a structured training plan lasting around 12 to 16 weeks.
Training usually includes three to four weekly runs with gradually increasing mileage.
Long runs typically build up to 10 to 11 miles before race day.
Plans often combine easy runs, speed sessions, and recovery runs to build endurance safely.
Many runners reduce their training volume in the final week to allow for recovery before the race.
Nutrition and Hydration
Staying well hydrated is essential during training and race preparation.
Runners should drink regularly throughout the day and increase fluid intake during long runs.
Carbohydrates such as pasta, rice, oats, or fruit help fuel endurance training sessions.
During longer runs, many runners practice taking energy gels or sports drinks.
Testing your nutrition strategy during training helps avoid problems on race day.
Injury Prevention
Increase weekly mileage gradually rather than making sudden jumps in training distance.
Include strength exercises and stretching to support muscles and joints used in running.
Schedule rest days to allow the body to recover between training sessions.
Wear properly fitted running shoes that have been tested during training runs.
Reduce intensity or rest if you feel persistent pain or fatigue during training.
Travel and Accommodation
If you're not local, you'll need somewhere to stay in Cardiff on the day of the race or a way to get there. There are lots of transport options and accommodation for those who want to stay. With an influx of runners into the city, you should book as early as possible, as hotels fill up quickly. Don't think that distance necessarily affects popularity, either. Half marathons like the Great Bristol Run and the Cardiff Half Marathon can be just as (if not more) popular than marathons.
Getting to Cardiff
Cardiff Central Station is the city’s main railway station and sits about a 10–15 minute walk from the race start near Cardiff Castle.¹⁰
Direct train services connect Cardiff with major cities including London, Bristol, Birmingham, and Manchester.
Cardiff Airport is located roughly 12 miles southwest of the city centre and is connected by shuttle buses and rail services.
Drivers can reach the city via the M4 motorway, which runs across South Wales and connects Cardiff with England.
The race start and finish areas are located in central Cardiff near the Civic Centre and Cardiff Castle.
Accommodation Options
| Hotel / Accommodation | Area | Distance to Cardiff Castle / Start Area | Typical Price Range (Race Weekend) | Notes for Runners |
|---|---|---|---|---|
| Hilton Cardiff | City Centre | Opposite Cardiff Castle (~1–2 min walk) | £140–£220 | Very close to start area; ideal for race morning logistics. |
| Hotel Indigo Cardiff | City Centre (Queen Street) | ~200 m | £130–£200 | Boutique hotel near restaurants and shopping streets. |
| The Parkgate Hotel | Westgate Street | ~300 m | £160–£260 | Luxury hotel near Principality Stadium and spectator areas. |
| Holiday Inn Cardiff City Centre | Castle Street | ~200 m | £110–£180 | Popular with runners due to proximity to Cardiff Castle and Bute Park. |
| Clayton Hotel Cardiff | Near Cardiff Central Station | ~10 min walk | £120–£190 | Convenient for runners arriving via Cardiff Central train station. |
| easyHotel Cardiff | City Centre | ~12 min walk | £60–£110 | Budget-friendly option for short stays during race weekend. |
| Future Inn Cardiff Bay | Cardiff Bay | ~2 km | £110–£170 | Waterfront hotel with parking; useful for runners arriving by car. |
Parking and Transportation on Race Day
Many central Cardiff roads close early on race morning to allow the marathon course to operate safely.
Organisers usually recommend travelling by train or public transport to avoid traffic restrictions.
Cardiff Central Station provides the most convenient rail access for runners arriving on race day.
Official Park & Walk parking is often available at Cardiff City Stadium for participants travelling by car.
The stadium is approximately one mile from the start area, allowing runners to walk to the race village before the race.
Race Day Information
Runners, spectators, and volunteers all gather across the city for the race. Make sure you're aware of the schedule to reduce stress on the big day. Properly prepare, and you can focus on running.
Schedule of Events
Race day for the Cardiff Half Marathon 2026 is Sunday, 4 October 2026.³
The Event Village near Cardiff City Hall typically opens early in the morning for runners and spectators.
Elite wheelchair athletes usually start shortly before the main race begins.
The main Cardiff Half Marathon race begins at approximately 10:00 AM near Cardiff Castle.
Runners start in staggered waves based on their predicted finishing times.
Finish-line celebrations and post-race activities take place in the Civic Centre area after the race.
What to Bring
Your race bib and timing chip were provided in your race pack before the event.
Running shoes and clothing that you have already tested during training.
Personal nutrition, such as energy gels or electrolyte drinks, should be considered if you plan to use them during the race.
A lightweight layer or change of clothes for after the race.
Identification and emergency contact details in case they are needed during the event.
Spectator Information
Spectators can watch the race from many points across Cardiff city centre and along the course.⁷
Popular viewing areas include Cardiff Castle, the Principality Stadium, and the start area on Castle Street.
Cardiff Bay Barrage and the Wales Millennium Centre are well-known cheering spots later in the race.
Roath Park Lake is another popular viewing location where spectators can see runners pass around the lake loop.
The finish area near Cardiff City Hall and the Civic Centre attracts large crowds and post-race celebrations.
Post-Race Details
Once you cross the line, you can bask in the glory. Check your official time, view race photos, and start recovering. You can find it on the official site.
Results and Timing
Official Cardiff Half Marathon results are published online shortly after the race finishes.
Runners receive chip-timed results that record their official finishing time and split times.
Participants can search for results using their name, race number, or finishing position.
Age-group rankings and overall race standings are also included in the official results list.
Results are typically available on the Run 4 Wales results platform after the event.
Photos and Media
Professional photographers are positioned at multiple locations along the race route.
Photo points often include sections such as Cardiff Bay, Roath Park, and the finish area.
Participants can search for their official race photos using their race bib number.
Photos are uploaded online shortly after the race and can be downloaded or purchased.
Race highlights and video coverage are often shared through the official event website and social media channels.
Recovery Tips
Rehydrate soon after finishing the race to replace fluids lost during the run.
Eat a balanced meal with carbohydrates and protein to help restore energy levels.
Light walking after crossing the finish line helps reduce muscle stiffness.
Gentle stretching can support muscle recovery following the 13.1-mile distance.
Many runners take several days of rest or light activity before returning to training.
References
- “About the Race.” Cardiff Half Marathon, Run 4 Wales, https://www.cardiffhalfmarathon.co.uk/event-info/about-the-race/. Accessed 8 March 2026.
- “Cardiff Half Marathon 2026.” Let’s Do This, https://www.letsdothis.com/gb/e/2026-cardiff-half-marathon-254830. Accessed 8 March 2026.
- “Cardiff Half Marathon October 2026.” Cardiff University Events, https://events.cardiff.ac.uk/view/cardiff-half-marathon-october-2026/. Accessed 8 March 2026.
- “International Entry.” Cardiff Half Marathon, Run 4 Wales, https://www.cardiffhalfmarathon.co.uk/take-part/international-entry/. Accessed 8 March 2026.
- “Route.” Cardiff Half Marathon, Run 4 Wales, https://www.cardiffhalfmarathon.co.uk/event-info/route/. Accessed 8 March 2026.
- “Run for Charity: List of Associated Charities.” Cardiff Half Marathon, Run 4 Wales, https://www.cardiffhalfmarathon.co.uk/charity/running-for-charity-list-of-associated-charities/. Accessed 8 March 2026.
- “Spectator Information.” Cardiff Half Marathon, Run 4 Wales, https://www.cardiffhalfmarathon.co.uk/get-race-ready-fast/spectator-info/. Accessed 8 March 2026.
- “SuperHalfs.” Cardiff Half Marathon, Run 4 Wales, https://www.cardiffhalfmarathon.co.uk/event-info/superhalfs/. Accessed 8 March 2026.
- “Take Part.” Cardiff Half Marathon, Run 4 Wales, https://www.cardiffhalfmarathon.co.uk/take-part/. Accessed 8 March 2026.
- “Travel.” Cardiff Half Marathon, Run 4 Wales, https://www.cardiffhalfmarathon.co.uk/get-race-ready-fast/travel/. Accessed 8 March 2026.
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