In the world of sports, a distance of 1.6 km or 1 mile is equivalent to 4 times the length of the track at the athletic field. This distance is the standard often used to test physical endurance, both among athletes and military institutions.
A study at UT Southwestern Medical Center revealed, a distance of 1.6 km is also able to predict the risk of stroke and heart attack, especially in middle-aged men. The faster travel time at that distance, the smaller the risk of heart disease in the next 10 years.