Why Eliud Kipchoge may not break under two hour 42km mark
When marathon world record holder Eliud Kipchoge charged across the line to win last year’s Berlin Marathon in a world record of 2:01.39, athletics fans began to think of the unthinkable.
His time, which stands at 99 seconds from the enviable and often thought to be humanly impossible sub-two-hour marathon time, has been in many people’s minds and lips. Could he, could he not...
And while Kenyans and athletics fans were eagerly awaiting for the new time, scientists yesterday said an elusive sub-two hour marathon can only be achieved in 2032.
According to the modelling, only women are unlikely to ever breach the magical mark.
The 42.195 kilometres (26.219 miles) race was one of the original Olympic events in 1896, and runners have been edging closer to the hallowed 120 minutes ever since.
But a new statistical model based on male and female marathon world record progressions suggest there is still some time to go before anyone achieves the feat.
Research, led by Simon Angus from Melbourne’s Monash University and published in the American College of Sports Medicine’s flagship journal, forecasts the first sub-two hour marathon will likely be run by a man in May 2032.
The modelling also estimates 1:58.05 as the fastest any human will ever be able to run the distance, while the chance of a woman cracking two hours was put at less than one in 100. The quickest all-time female marathon time was estimated to be 2:05.31.
Kipchoge, who ran 2:00.25 in Monza, Italy last year as part of the Nike Breaking2 project (the time was not ratified by IAAF as pacers were subbed in and out of the race) thinks it is possible to set new time before the estimated 2032.
“The research is okay. But remember, nothing is impossible. Anyone who has the discipline, devotion and hard work can still run under tow hours. It’s all about the mindset,” said Kipchoge on phone from Eldoret.
The world governing body recognises two marks for women -Briton Paula Radcliffe’s 2:15.25 from 2003 in London, where male and females competed, and the 2:17:01 by Kenya’s Mary Keitany in 2017 at a London race for women only.
According to Monash Business School, their study is the first to address all three related aspects of marathon performance in one modelling framework -sub-two hours, the limits of human physiological running capacity and gender equivalence.
It applied a non-linear economic model to all official IAAF world record marathon performances since 1950 to calculate record-breaking prediction intervals.
From there, Angus said they were able to reconceptualise the ‘sub-two hour question’ as one of odds -- for example, when will a given time be run with a 10 percent likelihood.
Using these figures, the study determined the limits of human marathon performance and the gap between the current world records and what might be possible in the future.
It claimed the economic model was, on average, accurate to within one percent for men -or around 70 seconds -across the 66-year study period which saw 19 minutes shaved off the world mark.
For women, accuracy was within three percent -or roughly 200 seconds -across the same period where the world record dropped by one hour and 22 minutes.
“In other words, if an IAAF marathon were run in May 2032, then I would predict that there is a 10 percent chance that a runner in that event will break the two-hour mark,” said Angus, an economics professor and ultramarathon runner.
“By inspecting the prediction lines on my economic model, there was only a two percent chance that the sub-two hour record would be broken at that point in time,” he added, referring to Kipchoge’s recent record run.
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