Cardiff Half Marathon 2025 Entry. Sunday 5th october 2025 location: When general entries sell out, it will still be possible to register via an official charity until 11 september 2025.
Registration for the 2025 cardiff half marathon is now open, with those keen to take part being encouraged to register as soon as possible, with the race due to sell out imminently. General entries into the 2025 cardiff half marathon have sold out in record speed, with all general entries filled within 12 hours of going on sale.