C. 174.883 mph
On February 4, 1927, Malcolm Campbell achieved the land speed record at Pendine Sands in Wales. In an average of two runs, the Napier-Campbell Blue Bird covered the flying kilometre at 174.883 miles per hour (281.447 kilometres per hour) and the flying mile at 174.224 miles per hour (280.386 kilometres per hour).

In total, Campbell set nine land speed records between 1924 and 1935, with three at Pendine Sands and five at Daytona Beach. His initial two records were achieved while driving a racing car built by Sunbeam. Additionally, he set the world water speed record four times, with his fastest recorded speed reaching an astonishing 141.740 mph (228.108 km/h) in the Blue Bird K4. This remarkable feat was accomplished on August 19, 1939, at Coniston Water.
