> That’s 7:15 per mile or 4:30 per kilometer for 24 straight hours. That's an insane pace to keep up! I couldn't manage an hour of that, it's a real wonder wha

> That’s 7:15 per mile or 4:30 per kilometer for 24 straight hours. That's an insane pace to keep up! I couldn't manage an hour of that, it's a real wonder what the human body can achieve.