Princess Beatrice loved "every minute" of her Triathlon.
The 28-year-old royal - the granddaughter of Queen Elizabeth and Prince Philip - swam two miles, cycled 70 miles and hiked more than 20 miles up Mount Etna - an active volcano - with Sir Richard Branson and his children earlier this week to raise money for the charity Big Change.
She told The Express newspaper: "I loved every second ... We wanted to do something that was about bringing people together but about asking slightly hard questions about how we can make the biggest change, not just looking at causes, but actually looking at how we can really make a sustainable difference to the lives of young people."
Beatrice - who suffers with Dyslexia - set up the charity Big Change with the business magnate to ensure all young people have the "necessary tools they need to thrive in life."
She explained: "The dyslexia battle is something that everyone goes through everyday but I hope that in the future that we can create a place where it doesn't matter if you've got dyslexia or if you don't - where the school environment is a safe and secure place for young people to thrive, not just in exams. It's about ensuring that young people have the tools that they need to be able to take on work and life and education and families - that all rolls into one."