This morning, Eliud Kipchoge ran a marathon in two hours, twenty-five seconds. On the one hand, that fell short of the sub-two-hour goal that he and his Nike support team had been shooting for – a parallel to Roger Bannister breaking the four-minute mile exactly 63 years back. But, on the other hand, it bests the prior world record time by more than two-and-a-half minutes, a nearly superhuman feat.

It’s hard to get a real sense of how crazy a sub-two-hour marathon is. As it’s a consecutive series of twenty-six 4:41 miles, it’s literally just harder than setting your treadmill to 13mph, then running for two hours nonstop. To demonstrate that, Wired put today this great video, which includes (along with some physiological analysis of the feat) a number of members of Wired’s running club trying to see how long they can hold that 13mph. In short, it turns out they can cruise for about a minute before things fall apart. So, just more than 99% of the race to go!

Congrats to Eliud and everyone at Nike. The two-hour barrier may not have fallen today, but it’s only a matter of time.