Kate joined her husband Prince William in Anglesey to see him begin a round-the-island 135-mile long marathon.
The next event to be attended by the Duchess and her husband will be the inauguration of Tusk Conservation Awards. This event will take place in London on 12th of September.
Even if it's only five weeks after the birth of Prince George Alexander Louis, Kate looks great. Prince William will go next month to take up a new military posting after the event.
Kate and William have decided to live after the birth of their first born with Kate's parents in Bucklebury, Berkshire.
Before the birth of Prince George, Kate and William have lived in a rented farmhouse in North Wales but they have decided that it is best to move into a larger residence starting with October, respectively Kensington Palace.
Before moving into the larger residence the two are expected to spend some time at the royal family's summer holiday estate in Balmoral, Scotland. Kate and William are expected to visit the baby's great-grandparents, Queen Elizabeth II and Prince Philip.