In pictures: Duchess of Cambridge's surprise visitPublished30 August 2013Shareclose panelShare pageCopy linkAbout sharingImage caption, The Duchess of Cambridge has made her first public appearance since the birth of Prince George as she joined husband William at the start of an ultra marathon on AngleseyImage caption, The presence of the duchess at the Ring O' Fire event was a surprise and she joined the Duke of Cambridge who officially started the three-day, 135-mile (220km) coastal runImage caption, The royal couple spent just under an hour at the event greeting volunteers, runners and local residentsImage caption, It is thought this could be one of the couple's last public engagements on Anglesey before they leave their home there next monthImage caption, A report into tourism on Anglesey last year highlighted the economic lift the royal couple had helped generate, as heightened coverage of the area saw an increase in the number of visitorsMore on this storyDuchess attends Anglesey marathonPublished30 August 2013