Three miles is a unit of distance commonly used in the United States and the United Kingdom. It is equivalent to approximately 4.83 kilometers. This distance can be visualized as about 60 city blocks or a 5K run, which is a popular race distance. Walking three miles typically takes about an hour for an average person, while running it may take around 20 to 30 minutes, depending on speed. Many people use this distance for exercise, such as walking or jogging, and it can be a part of fitness routines or training for events like marathons.