Support the 1 in 10 with endometriosis by running one of the largest and most exciting road races in the UK!

Now a member of the SuperHalfs, a global series of the world's most prestigious half marathons including races in Prague, Lisbon, and Copenhagen, Cardiff Marathon is one of Europe's largest half marathons!

This flat, fast course passes all of the city's most breathtaking scenery and iconic landmarks including Cardiff Castle, the Principality Stadium, and stunning Cardiff Bay.

We will join thousands of spectators on the day to cheer you on as you take on this challenge! This is sure to be a day to remember.

Endometriosis can be a difficult and isolating illness, every penny you raise will help us to support those living with the disease by helping to fund our helpline and support groups.