The fastest marathoners are moving at 4m30sec per mile or faster.

Very few mere mortals could run that fast for even 100m.

Yeah I can barely even ride my bike that fast much less keep that pace for two hours.

He did his _last_ mile in 4.17. Insane.

21.19km/h on average, or 17 seconds per hundred metres on average.

No, it's slower than most people's sprints. It's 17 seconds per 100 metres which is slow. Most teenagers can do this starting from rest.

I'm not a runner at all, but people say that they can do that for like a minute, maybe two at best... and these guys did it for two hours straight.