For lack of a comparison to merit justice, Downhill is Olympic skiing meets The Fast and the Furious. In this event, athletes basically start at the top of a very big, steep hill, and shoot down it, typically reaching 80mph, but occasionally ripping down the course at 95mph.
During the event, competitors have to stay within rectangular shaped gates while maintaining speed. While staying within the course is important, speed is the most paramount, as the skier with the fastest time wins. As you can imagine, the liability is greater, and gnarly wipeouts can occur, which is why athletes only have one run to notch their fastest time.
This event has the longest course, the highest vertical drop, and judging hinges on "the six components of technique, courage, speed, risk, physical condition and judgement,” according to the International Ski Federation.