2026 Cardiff Half Marathon

About the Event

One of the largest and most exciting road races in Europe, the Cardiff Half Marathon returns to the streets of Cardiff on Sunday 4 October in 2026. A member of the SuperHalfs series and awarded an Elite Label by World Athletics, the flat, fast course passes all of the city’s most breathtaking scenery and iconic landmarks including Cardiff Castle, the Principality Stadium, Civic Centre and stunning Cardiff Bay.

Join the thousands of other runners being cheered along the way by the crowds of spectators lining the streets, at one of Britain’s best supported running events.

For 2026, you can enter via the Ballot, one of our limited ‘Skip the Ballot’ options, or secure a space via our official charities, tour operators, or via a Business Challenge package.

Mae Hanner Marathon Caerdydd wedi tyfu i fod yn un o’r rasys ffordd mwyaf cyffrous a phoblogaidd yn Ewrop. Hwn yw’r ail hanner marathon mwyaf yn y DU a dyma’r digwyddiad mwyaf yng Nghymru o ran codi arian ar ran elusennau amrywiol.