Kate Middleton joined the British Royal Family in 2011. Following her wedding to Prince William, she became an official member and has since served the Crown.

Despite her continued efforts and commitment to the British Monarchy, she has not experienced riding the Royal Train yet. But, the Daily Express reported that this would change on Sunday when she and the Duke of Cambridge leave for their three-day tour.

The Cambridge couple will tour across the United Kingdom with "multiple stop-overs." They will visit and engage with communities, as well as key workers, who have "helped make a difference" amid the pandemic crisis.

The royal tour will mark Kate Middleton's first Royal Train ride since she joined the British Royal Family. Reports said that the trip would last for three days, covering 1,250 miles in its entirety.

People said that the Duke and Duchess of Cambridge would make stops, as well, in various cities and towns. They will celebrate the "resilience of communities" ahead of the holiday season.

Apart from key workers, they will, also, meet teachers and schoolchildren to hear all about their respective experiences throughout the "challenging year." Moreover, they plan to "pay tribute" to those who have deeply suffered amid the COVID-19 crisis.

A spokesperson for Kate Middleton and Prince William released a statement ahead of their royal tour. As stated, the royal couple is "looking forward" to their trip, adding that they want to shine a spotlight on the communities' efforts and share gratitude "on behalf of the nation."

The formal office of the Cambridge couple, later on, said that the Duke and Duchess would "take part" in various events throughout the tour. They, also, plan to "showcase" initiatives and organizations, which NHS Charities Together supports.

Kate Middleton has not boarded the Royal Train in the last nine years because she has no reason to do so, according to Geo TV. But, the case is different for Meghan Markle, who has already experienced riding the trail, alongside Queen Elizabeth.

Weeks after her wedding to Prince Harry, the British Monarch invited the Duchess of Sussex to join her on her trip to Chester. The publication said that she was "lucky" to receive an invite from the Queen, adding that it was a privilege that the Duchess of Cambridge has not received yet.

Queen Consort Adelaide was the first royal to use the Royal Train back in 1840. Queen Victoria, then, became the first reigning British Monarch to utilize the ride two years later.