What is the average run time for kilometer run by a 13 year old?

The average run time for a kilometer by a 13-year-old can vary widely based on fitness levels, experience, and training. Generally, a reasonable time for a moderately fit 13-year-old might range from 4 to 6 minutes per kilometer. More competitive young athletes may complete it in under 4 minutes, while those less active may take longer than 6 minutes.