The length of time it takes a human to run 5 kilometers, or 3.1 miles, depends on the runner's level of fitness, experience and speed. A runner who runs 1 mile in 10 minutes can complete 5 kilometers in a little more than 31 minutes.
Proper training is important prior to running 5 kilometers. Many training schedules are available online. An inexperienced runner who is not currently exercising can train for a 5-kilometer race in as little as nine weeks. Training involves a manageable schedule of 20 to 30 minutes of exercise three times per week. Exercises initially alternate walking and jogging, then progress to the goal of jogging 5 kilometers.