2025 Brecon Carreg CDF 10K: Everything You Need To Know
The 39th Brecon Carreg CDF 10K is returning to the Welsh capital on Sunday 7 September 2025. This year will be the biggest edition to date with more than 7,800 people registered to take part in the 10K and supporting 2K fun run, and Cardiff is predicted to be a hub of excitement with thousands more spectators expected to descend to the city.
When is the CDF 10K?
The event takes place this Sunday 7 September. The 2K race will start at 09:15am and the 10K race will start at 10:00am.
Where is it happening?
The event is based in Cardiff’s city centre with all races starting and finishing in King Edward VII Avenue. The event village is situated on the City Hall Lawns.
Can I still enter?
Registration for all races is now closed and no on-the-day entries will be available.
Where does the 10K race go?
The Brecon Carreg CDF 10K takes runners on a sightseeing tour of the Welsh capital, with highlights including Cardiff Castle, Central Square and the Principality Stadium. The race will journey through the heart of central Cardiff, before crossing the River Taff and heading towards the leafy suburb of Pontcanna and the grade 2 listed parkland of Llandaff and Pontcanna Fields. Runners will then pass Sophia Gardens, the home of Welsh cricket, before passing Cardiff Castle once again ahead of a grandstand finish in the Civic Centre.
You can see a map of the route here.
What other race is taking place?
There will be a 2K race taking place ahead of the 10K to allow runners of all ages and abilities, and their families, to soak up the race day atmosphere.
What is the weather forecast?
The forecast currently predicts that there may be some light rain and a moderate breeze in the morning with the afternoon making way for some sunshine.
What is the best way to travel to the race?
Cardiff is easily accessible by foot, bike, public transport or car. Getting across the city and to locations around the city can be achieved easily with a number of pedestrianised streets. Runners are advised to check before travelling by train in case of cancellations, strike action or engineering works.
We advise all runners to explore all parking options within the city at www.en.parkopedia.co.uk/parking/cardiff or www.cardiff.gov.uk, as well as road-side parking where safe and secure.
For those arriving by bike, there will be a free bike park available in the Event Village. You will be able to lock your bikes within this bike park for the duration of race day.
Be aware that the final stage of the 2025 Lloyds Tour of Britain will finish in Cardiff on the same day as the Brecon Carreg CDF 10K. The cycling race won’t arrive in the city until the afternoon – after the 10K has finished – however road closures will begin early and make leaving the city after the race more difficult in some directions.
For travel and parking advice click here.
Will there be road closures in place?
Some road closures will be in operation to facilitate the safe passage of participants. A list of road closures to help plan your journey can be found here.
Closures on North Road (between Gobalfa Interchange and Royal Welsh College of Music & Drama) due to the events taking place in the city may affect journeys into the city and when leaving the race.
Will there be atmosphere around the route?
There will be a fantastic atmosphere in Cardiff, with thousands of spectators expected to turn out to support. Runners can expect an extra boost thanks to musical entertainment from ‘The Rock Choir’ and the Vale of Glamorgan Brass Band along the route.
Will money be raised for charity?
Kidney Wales is the Lead Charity of the event, with over 140 runners fundraising to support patients affected by kidney disease all over Wales.
What else is going on?
Brecon Carreg are the headline sponsor of the event for the second year. They will be using their association with the race as a vehicle to promote recycling, sustainability and the fight against plastic waste and have recruited a team of ‘ploggers’ (the act of litter picking whilst jogging) who will be taking part in the 10K, collecting litter as they go.
A Team Challenge will see 11 teams from companies including Team Vista, Eversheds, Darwin Gray LLP and Lab 22 (who are bringing a team of 100 runners), go head-to-head.
Who organises the event?
The event is organised by Run 4 Wales (R4W), a not-for-profit social enterprise and charitable trust that manages major sporting events including the Oysho Cardiff Half Marathon, but the race would not be possible without the support of volunteers. A team of 100 ‘Extra Milers’ will be giving up their own time on race day to ensure every runner has an unforgettable experience.
What will runners receive when they finish the race?
Every 10K runner will receive a commemorative medal and event t-shirt upon finishing the race.
This year the t-shirt will feature the city’s beautiful parkland. The medal includes Cardiff Castle’s clocktower and will form the final link in a matching set with medals given out at other 2025 events in the R4W 10K Series including the ABP Newport Wales 10K, Barry Island 10K and Brecon Carreg Porthcawl 10K.
Can you track runners around the race?
The Run 4 Wales App on iOS and Android can be used to inspect the route pre-race and live track participants on the day with full Google maps functionality.
Find out more or download the app here.
Race Day Guide
A full lowdown of all the important event information can be found here.
If you’re taking part and have any questions or issues, the Event Helpdesk will be open from 07:30am in the Event Village on the City Hall Lawns on Sunday morning. Information about what to do if your race pack has not arrived can be found here.
