According to the actual situation, according to the boys, the top students are 3 kilometers, 8 minutes and 9 minutes. The average person (10 to 12 minutes with normal exercise endurance) may need 15 minutes or fall halfway.

1 500 is much easier. It takes 5 minutes to reach health, 6 to 7 minutes for ordinary people, and 8 to 10 minutes for people who exercise less.