King Charles III has maintained a demanding schedule of royal engagements, undertaking duties on 164 days during his fourth year as monarch, despite undergoing ongoing cancer treatment. This pace saw him meet with various dignitaries, including Pope Leo XIV and U.S. President Donald Trump on two occasions.

The figures, compiled by the Press Association from the official Court Circular, indicate a coordinated effort by senior royals to increase their public activities over the past year. Queen Camilla carried out engagements on 114 days, an increase from previous years. The Princess Royal remained the most active, with 183 days of engagements, while Prince Edward, Prince William, and the Princess of Wales also saw their engagement days rise.

Key events during the King's fourth year included a state visit to the United States, a tour to Bermuda where he addressed the U.S. Congress, and a two-day state visit to the Vatican in October 2025. Domestically, his engagements included taking the controls of a tram-train in Wales and attending the Commonwealth Games opening ceremony in Glasgow.

The Press Association defines a day with engagements as one where the monarch undertakes at least one official visit, meeting, or function. The period covered marks the fourth year of King Charles's reign, following the death of Queen Elizabeth II in 2022.

Working hard: Kate hugs a child as she visits Scuola Comunale d'infanzia Anna Frank, a municipal pre-school for three to six-year-olds during the first day of her visit to Reggio Emilia