At the ages of 92 and 97 respectively, they could be forgiven for picking up a more sedate hobby.
But the Queen and Duke of Edinburgh yesterday showed they still know how to enjoy themselves.
The royal couple, appearing in robust health, were photographed enjoying the great outdoors at Windsor Castle, she riding her beloved pony, and he driving a carriage.
The pony had an unmistakable red rosette of four poppies attached to its bridle, signifying the Queen's dedication to the season of remembrance so important to the Royal family.
The Queen, wrapped up warmly in a navy blue coat and headscarf against the November chill, rode through the castle grounds accompanied as usual by Terry Pendryon, her head groom.
The Duke, meanwhile, undertook his own journey driving a carriage - the sport he made famous - accompanied in the back seat by two female grooms.
The sight will prove cheering for admirers of the Royal family, who have been left in no doubt as to the Queen's continued good health but have been concerned by a series of health scares for the Duke.
Riding separately at their own paces, both looked on fine form yesterday, with the Queen taking a momentary break from her duties in the lead-up to November 11.
Then, she will ask the Prince of Wales to once again lead the nation in honouring the country's war dead during the national service of remembrance, while she watches from a balcony.
The Duke's attendance is not confirmed and, as with all engagements since his retirement, will be decided on the day.
The service will also be attended by the Duchess of Cornwall, Duke and Duchess of Cambridge, Duke and Duchess of Sussex, the Duke of York and minor members of the Royal family.
An equerry will lay a wreath on behalf of the Duke of Edinburgh, who has retired from public duties.
It will be the first time the Duchess of Sussex has attended the event.
Last night, the Queen was fondly mentioned at a state dinner thrown in Ghana by President Akufo-Addo for the Prince of Wales and Duchess of Cornwall, during their West Africa tour.
"We have very fond memories of the two visits made by your mother, Her Majesty Queen Elizabeth II," he told the Prince.
"The first was in 1961, four years after independence, when she and your father were the guests of our historic first president.
"The second was in 1999 when she was hosted by our country's longest serving president.
"As you can see, we enjoy the presence in our midst of members of the British Royal family."