Why is the length of the maron 26 miles and 385 yards?

The marathon distance of 26 miles and 385 yards was standardized in 1908 during the London Olympics. The race was originally 25 miles, but to accommodate the royal family’s viewing preferences, the distance was extended to 26 miles and 385 yards, which is equivalent to 42.195 kilometers. This distance was later adopted as the official marathon length by the International Association of Athletics Federations (IAAF).