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:
13. Crowds greet King Charles III as he arrives in Lancashire on Royal Train
King Charles smiles as he greets well-wishers during his walkabout in Clitheroe. | Kelvin Lister-Stuttard
14. Crowds greet King Charles III as he arrives in Lancashire on Royal Train
Union flag hats and banners fill the station as excitement builds. | Peter Byrne/PA Wire
15. Crowds greet King Charles III as he arrives in Lancashire on Royal Train
Residents reach out to speak with the monarch during his walkabout. | Kelvin Lister-Stuttard
16. Crowds greet King Charles III as he arrives in Lancashire on Royal Train
The monarch exchanges a few words with residents who gathered at the station. | Kelvin Lister-Stuttard