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Eliud Kipchoge Breaks Two-Hour Marathon Barrier

nytimes.com

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Re: Eliud Kipchoge Breaks Two-Hour Marathon Barrier

#121

Post by michaelt »

tjr225 wrote: post #103
phkahler wrote: post #40

Earlier quoted context omitted.

So use an AR headset to put a virtual person in front of you keeping a constant pace?

What possible benefit would AR provide in this situation?

phkahler thinks if the record attempt is invalid because of the team of pace runners, why not use a simulated pace runner to gain the benefit without breaking the rule?

Of course, if the speed benefit of pacing is down to psychology and camaraderie rather than purely information, a simulated pacer might not offer the same benefit.

Re: Eliud Kipchoge Breaks Two-Hour Marathon Barrier

#122

Post by nradov »

paganel wrote: post #10
nradov wrote: post #5

With sports performance a lot of the barriers are psychological. Even though this wasn't a real sanctioned race, Mr. Kipchoge showed it's possible for the human body so now I expect he or someone else will do it in a race within a few years.

The recent Salazar scandal proves otherwise, i.e. that a lot of today’s athletics-related performances are reached based on same old drug cheating. Too bad, athletics as a competitive sport used to be an event that genuinely filled up big stadiums (like in 1993 in Stuttgart or in 1999 in Sevilla), nowadays we’re left wondering which results will be wiped out in 5 years’ time, while the recent 100-meter World Champs f…

While Kipchoge is sponsored by Nike, he was never part of Salazar's Nike Oregon Project and has never failed a doping test.

Doha is a rather terrible site for an athletics meet. Plus Qatar is under a travel ban from Saudi Arabia and other neighboring countries. So the low attendance attendence doesn't necessarily mean much.

Re: Eliud Kipchoge Breaks Two-Hour Marathon Barrier

#124

Post by jeff18 »

Mountain_Skies wrote: post #98
read_if_gay_ wrote: post #83

Earlier quoted context omitted.

Maybe for keeping a safe distance without having to eyeball it, or for avoiding the fumes.

Might want to use an electric car to avoid the fumes. I do wonder if the car, even a larger distance ahead, does more for drafting than a human in front of the runner.

According to the article, it was an electric car.

Re: Eliud Kipchoge Breaks Two-Hour Marathon Barrier

#125

Post by YeGoblynQueenne »

rco8786 wrote: post #69
YeGoblynQueenne wrote: post #57

So Kipchoge had rotating teams of pacemakers running _before_ him, throughout the race. Each team was able to outrun Kipchoge for a short amount of time, but of course Kipchoge himself had to keep the same pace throughout the race. This reminded me of an episode from Terry Pratchett's Small Gods . This is mostly from memory, but he describes an invasion of the country Ephebe where the invasion force comes from the si…

Sounds like dynamic programming

It kind of does. I have dynamic programming in my mind also, these days hence why I'm not sure- maybe I'm seeing dynamic programming everywhere.

Re: Eliud Kipchoge Breaks Two-Hour Marathon Barrier

#126

Post by posterboy »

arctangent wrote: post #67
YeGoblynQueenne wrote: post #57

So Kipchoge had rotating teams of pacemakers running _before_ him, throughout the race. Each team was able to outrun Kipchoge for a short amount of time, but of course Kipchoge himself had to keep the same pace throughout the race. This reminded me of an episode from Terry Pratchett's Small Gods . This is mostly from memory, but he describes an invasion of the country Ephebe where the invasion force comes from the si…

I don't know for sure but I strongly suspect that Pratchett was heavily influenced by Operation Black Buck: https://en.wikipedia.org/wiki/Operation_Black_Buck In particular, this diagram from that page makes the process clear: https://en.wikipedia.org/wiki/Operation_Black_Buck#/media/Fi... Hopefully the name of the original mission is enough to help you find a link to some relevant mathematics :-)

I think it rather alludes to caravans and their trade with beduins accross established trade routes

Re: Eliud Kipchoge Breaks Two-Hour Marathon Barrier

#127

Post by SlowRobotAhead »

bandrami wrote: post #14

I can't sprint that fast nowadays. When I was in the Marines 20 years ago, my 3-mile pace was slower than that, and I still had a class "A" run time. This is amazing.

It’s a whole different thing to try and picture it than see it!

I ran a 1/2 marathon where a highly ranked runner was competing in the full.

He passed me at mile 11 of the 1/2, so about 23 of the full. His pace for 26 miles was absolutely faster than I can run for one, maybe two blocks.

Just giant effortless strides, with a damn smile on his face. Iirc, his marathon time was 2:12.

Re: Eliud Kipchoge Breaks Two-Hour Marathon Barrier

#128

Post by vibrolax »

js2 wrote: post #112

Link to full video in case you didn’t watch it live (in which case, what’s wrong with you?): https://youtu.be/k-XgKRJUEgQ This is an extraordinary achievement. It was just last September that Kipchoge set the W.R. time of 2:01:39[1]. It’s only a matter of time (no pun intended) till sub-2 is broken in competition. Probably at Berlin. Just knowing it’s possible is a huge barrier to break through. I’ve run over two doz…

Congratulations on qualifying for Boston. I found "Jack Daniel's Running Formula" an invaluable resource in learning how to obtain the best performance from your body. His V-Dot fitness estimator can predict your marathon time (with optimal training) from your 5k race performance. I also had a goal to run a 3 hour marathon, but my 5k race time was just a few seconds too slow to extrapolate a 3 hour marathon. I did hit my predicted marathon performance (3:06), so I was able to give up the 3 hour goal with no regret. I recognized that it might not be realistic to improve my leg speed and 5k times at age 40, having over 6 years of good training, coaching, and racing experience under my belt.

Re: Eliud Kipchoge Breaks Two-Hour Marathon Barrier

#129

Post by Someone »

NickBusey wrote: post #119
arctangent wrote: post #67

Earlier quoted context omitted.

I don't know for sure but I strongly suspect that Pratchett was heavily influenced by Operation Black Buck: https://en.wikipedia.org/wiki/Operation_Black_Buck In particular, this diagram from that page makes the process clear: https://en.wikipedia.org/wiki/Operation_Black_Buck#/media/Fi... Hopefully the name of the original mission is enough to help you find a link to some relevant mathematics :-)

That diagram is anything but “clear”.

I find it fairly clear.

- each vertical line is the flight of an airplane

- each horizontal/diagonal line is a refueling operation

So, planes take of from Ascension Island at the bottom, only one reaches the Falkland Islands.

Ignoring the gray vertical lines (they are for ‘insurance’, in case other planes would have hit a problem), we have:

- 6 Victors taking of

- 3 of them refueling the other 3 after a short while (presumably because taking of and getting to flight height uses more fuel than steady flight), immediately returning to base afterwards.

- the bomber taking off

- a seventh Victor taking off, refueling the bomber twice, and then returning to base

- one of the 3 Victors of the first wave refuels the bomber twice, then refuels another of the three before returning to base

- that second one refuels the third one and returns to base

Etc.

Re: Eliud Kipchoge Breaks Two-Hour Marathon Barrier

#130

Post by alanbernstein »

YeGoblynQueenne wrote: post #57

So Kipchoge had rotating teams of pacemakers running _before_ him, throughout the race. Each team was able to outrun Kipchoge for a short amount of time, but of course Kipchoge himself had to keep the same pace throughout the race. This reminded me of an episode from Terry Pratchett's Small Gods . This is mostly from memory, but he describes an invasion of the country Ephebe where the invasion force comes from the si…

Described in idealized form here: https://en.m.wikipedia.org/wiki/Jeep_problem
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