How many feet are in a mile?

5,280 feet, or 1,760 yards. The number sounds arbitrary and has a genuinely good origin story: the Romans defined a mile as 1,000 paces, mille passus, about 5,000 Roman feet. When the measure crossed to England it collided with the furlong, the length of a plowed furrow, 660 feet, which was the unit medieval land records and farming actually ran on. Rather than redraw every property line, Parliament under Elizabeth I stretched the mile in 1593 to equal exactly 8 furlongs: 8 times 660 is 5,280.

So the mile is a compromise between Roman soldiers and English farmers, and America inherited it wholesale.

Useful nearby numbers: a 5K race is about 3.1 miles, a marathon 26.2, and one mile is roughly 1.6 kilometers. If you ever need the feet figure conversationally, the mnemonic five tomatoes works: five-two-eight-oh sounds enough like it to jog the memory, which is more than the metric system will ever need.