Since a kilometer is equal to 0.62 miles, 5 kilometers is the metric equivalent of 3.1 miles. Races of 5 kilometers are popular, especially for beginners just starting to run, and are usually easy to find within a reasonable distance.
For a variety of reasons, 5K races are ideal starting points. Running this distance does not require extensive training and proves an attainable goal for most healthy adults. More experienced runners often choose 5K races to work on increasing their running speed. For those who are not up to running that distance, walking or alternating between walking and running make good alternatives.