King Charles has carried out engagements on 164 days during the fourth year of his reign, all while continuing treatment for cancer, according to figures compiled by the Press Association from the Court Circular.
The King, now 77, has maintained a demanding schedule despite the diagnosis first announced by Buckingham Palace in February 2024. Rather than withdrawing from public life, he has continued with audiences, visits and state occasions throughout his treatment, including the months in early 2024 when illness kept him largely out of view.
Historic US state visit and Vatican trip
That determination was on full display on the world stage in late April and early May 2026, when Charles undertook a state visit to the United States followed by a tour of Bermuda, his first as sovereign to a British Overseas Territory. While in Washington he became only the second reigning British monarch in history to address Congress, delivering a speech celebrating Anglo-American relations.
The visit capped a remarkable seven months in which he met President Trump twice, first at Windsor Castle last September and then again on American soil. Months earlier, in October 2025, the King made a two-day state visit to the Vatican, where he met Pope Leo XIV and attended a service in the Sistine Chapel.
Engagement figures show steady workload
His 164 days of engagements mark a dip from the 176 recorded the previous year, but represent a rise on both his first year on the throne (161) and his second (133). The figures capture the King travelling across the country, from the Eden Project in Cornwall to Grimsby Town Football Club, from Ards Allotments in County Down to a stretch of the newly expanded King Charles III England Coast Path in East Sussex.
He took the controls of a tram-train near Cardiff, kicked off a game of hand ba’ in the Scottish Borders, and stepped out of the Doctor Who Tardis at the Commonwealth Games opening ceremony in Glasgow. Tuesday marks four years since the death of Queen Elizabeth II and the moment Charles became King. Despite being diagnosed with cancer early in his reign, palace officials insist the monarch has refused to let cancer define it.
Constitutional duties and family workload
Charles has also continued to shoulder the constitutional weight of the crown throughout his treatment. He held 26 formal audiences with his prime minister over the past year — 24 with Sir Keir Starmer and two with his successor Andy Burnham, who took over in July — and chaired 12 meetings of the Privy Council. He has kept up his diplomatic duties too, receiving Ukrainian President Volodymyr Zelensky twice and, most recently, French President Emmanuel Macron in September.
The King’s stamina appears to have set the tone for the wider family. Queen Camilla, who accompanied her husband to both the US and the Vatican, carried out 114 days of engagements — more than in any of the previous three years of his reign. The Princess Royal remained the family’s hardest worker with 183 days, while the Duke of Edinburgh notched up 147, up from 130. The Prince and Princess of Wales also stepped up their workload, with William on 115 days and the princess on 63, both notable increases from the year before.
