Well-wishers gathered at the railway station from early morning, waving flags, wearing Union flag hats and hoping to catch a glimpse of the monarch as he arrived shortly after 10.30am.
The King stopped to shake hands, exchange a few words with residents and admire a corgi puppy brought along specially for the occasion.
The atmosphere was festive throughout as families, children and long-time royal supporters lined the route to welcome His Majesty.
Here are 19 photos capturing the royal visit as it unfolded:
1. Crowds greet King Charles III as he arrives in Lancashire on Royal Train
The King steps onto the platform and begins greeting residents. | Paul Ellis/PA Wire
2. Crowds greet King Charles III as he arrives in Lancashire on Royal Train
King Charles arrives in Clitheroe shortly after 10.30am to loud cheers. | Kelvin Lister-Stuttard
3. Crowds greet King Charles III as he arrives in Lancashire on Royal Train
Smiles and handshakes as he meets well-wishers in the winter sunshine. | Kelvin Lister-Stuttard
4. Crowds greet King Charles III as he arrives in Lancashire on Royal Train
Well-wishers line the barriers, waving flags and waiting to greet the monarch. | Paul Ellis/PA Wire