The Duke of Cambridge will start the Ring O'Fire Anglesey Coastal Ultra Marathon on Anglesey later. The Ultra Marathon is an annual 135 mile coastal marathon circumnavigating the Isle of Anglesey. The foot race is staged over three days and follows the Anglesey Coastal Path around the island.
Prince William will meet a number of runners and their families and a selection of volunteers involved in the administration of the race before officially starting the Ultra Marathon.
The 135 mile distance and 13,695 feet of vertical ascent makes the Ring O' Fire one of the most extreme ultra marathons in the United Kingdom.
More top news
Chelsea Manning will be freed in five months after President Obama reduced her remaining prison sentence for leaking government documents.
Staff working in sterilisation and disinfection units at Abertawe Bro Morgannwg University Health Board hospitals will go on strike over pay
Carwyn Jones has told AMs about a phone call with Theresa May before her Brexit speech. He also said he fears for Welsh ports post-Brexit.