Brooklands opened that year, where Napier engineer H. C. Tryon won the first ever event in a 40 horsepower , and Edge made a famous 24-hour run in June, covering 1,581 miles (2,544 km) at an average 65.905 mph (106.06 km/h) in a 60 horsepower 589 cubic inch (9,652 cc) (127×127 mm, 5×5 inch) six, a record which stood for 18 years.