The Final Push for a Sub-Two Hour Marathon Is Here
The new men’s marathon world record of 2:00:35 set in Chicago shows that super shoes and training advances have athletes closer than ever to breaking a once-unthinkable barrier
Kelvin Kiptum lowered the men’s marathon world record by a whopping 34 seconds at the Chicago Marathon in early October. It’s the next 36 seconds, however, that loom larger in the sport as it chases a historic milestone: a sub-two hour marathon.
The two-hour mark is to the marathon what a four-minute mile was before Roger Bannister broke the barrier in 1954. Both milestones are arbitrary—they possess the allure of a nice round number—yet the pursuit of them has propelled athletes to change their approach to running.
Several factors have aligned to bring marathoners to the verge of a 1:59:59 result. Revolutionary “super shoes” introduced in recent years were a massive element in shaving big chunks of time off the men’s marathon world record, which a decade ago was still at 2:03:23. Now, runners like the 23-year-old Kiptum, are adapting their training to the shoe and finding even greater success through unconventional approaches. Nutrition advances have propelled further incremental gains.
One big aspect is simply the perception that breaking two hours in a race is even possible. The idea that it was impossible—or far off in the future—was shattered when Eliud Kipchoge ran 1:59:40 in a stunt race on a closed course in Vienna back in October 2019. The event wasn’t a sanctioned race, and the Kenyan great was propelled by dozens of rotating pacers.
The effort culminated years of research and thousands of dollars of investment by Jos Hermens, the Dutchman who founded the sports agency that represents Kipchoge and the NN Running Team with which he trains.
“After the 1:59, more people psychologically were ready to run faster,” said Hermens. “But of course, then there was a year of no marathons.”
Indeed, the two-hour mark might already have been breached had the pandemic not disrupted athletes’ training and wiped the calendar clean of races. Hermens estimated that it set the sport back “two to three years.”
It was the technological advance of chunky “super shoes” that laid the foundation for the recent surge in performance. Nike introduced its first such shoe, which pairs a highly cushioned sole with a springy carbon-fiber plate that propels its wearer forward, in 2016. Seven years later, you’ll find super shoes on the feet of every elite athlete and thousands of amateurs.
“We have had a complete recalibration of the sport,” Kara Goucher, a two-time Olympian, wrote in an email. “A woman running sub 2:12 or a man running sub 2 hours was thought impossible in 2015—and it probably was. But with the advancement of shoe technology it has completely changed the game.”
At first worn only for races, super shoes have also become the preferred trainers during hard sessions on the roads for most professionals because they improve running economy and make it easier to recover, coaches say.
This isn’t to say athletes always wear carbon-plated shoes—most say they still do their easy runs in regular trainers. But super shoes are undeniably on heavier rotation. Hellen Obiri, the 2023 Boston Marathon winner, said that she wears On Running’s super shoe during her long runs. Kipchoge does most of his workouts with marathon-pace efforts in carbon-plated shoes too, said Hermens.
Debut marathoner Ed Cheserek, a 17-time NCAA running champion who trained with Kiptum in Kenya over the summer, said that he wears various models of Skechers GOrun Speed Elite carbon-plated shoes during workouts. “They’re so much lighter,” he said, adding that they’ve made it easier for him to increase his weekly volume to a peak of about 150 miles.
Super shoes also mean that athletes can race more often. Kiptum set the world record in his third marathon in a 11-month period. Sifan Hassan raced the 1,500-, 5,000- and 10,000-meters at World Championships in Budapest six weeks before turning in a 2:13:44 to win in Chicago, the second fastest women’s marathon in history.
Both Kiptum and Hassan raced Chicago in prototypes of Nike’s Alphafly 3, its latest super shoe model that will be available to the public in January 2024.
“You can see how the athletes are after the finish. They’re more fresh,” Hermens said. “When Haile Gebrselassie broke the world record [in 2008] we nearly had to push him onto the podium. Now they jump on the podium.”
Around the same time that shoe technology rocketed forward, food scientists made a breakthrough that allowed athletes to optimize their carbohydrate intake during races. Runners need fuel to keep from fading hard, but guzzling sugary gels and liquids can cause gastrointestinal distress and costly mid-race port-a-potty stops.
Maurten, a Swedish sports nutrition company, seemingly solved that problem in 2015 when it introduced hydrogel, a carbohydrate-rich substance that doesn’t dissolve until it passes through the stomach and enters the intestine. Available as a powder that can be added to water or a thick gel with the consistency of clumpy Jell-O, it’s the preferred fuel of many elites, including Kipchoge and Kiptum.
There’s also been a shift in conventional wisdom around when and how to get into marathoning. For decades, most pro runners started out racing shorter distances, like the 5- and 10-kilometers, and gradually built up to half and full marathons in their late-20s and early 30s. That’s what Kipchoge did on his path to a world record.
There were two reasons: maturity and money. Running 26.2 miles fast—and training to do so—is physically and mentally grueling. The thinking is that “the faster you run at shorter distances, the easier the pace is at longer effort,” said professional marathoner-turned-agent Josh Cox.
Appearance fees for track meets also used to be higher than for marathons. But marathon organizers have upped their purses and athletes are following the money. Kiptum’s first race as a professional was a half marathon at age 18. He ran his first marathon in December 2022, two days after turning 23.
Tigst Assefa, the woman who shattered the world record by more than two minutes with a 2:11:53 in Berlin in September, specialized in the 800 meters as a teenager, representing Ethiopia at the 2016 Rio de Janeiro Olympics. Nagging injuries prompted her to shift to longer road races in her early 20s. At 25 in 2022, she ran her first marathon and then won her second in Berlin.
To be sure, the two-hour barrier is unlikely to be broken at this weekend’s New York City Marathon due to the hilly terrain along the route. The course record of 2:05:06 set in 2011 has survived the dawn of the super shoe era and none of the professionals racing have run within three minutes of Kiptum’s world record.
Hermens believes the first sub-2:00 marathon will happen in 2025 because of how the 2024 Paris Olympics will impact top athletes’ training priorities. Kipchoge has said he wants to win a third consecutive gold medal in the Olympic marathon, but the hilly Parisian course isn’t conducive to record-breaking times.
It’s a sign of all the things that must align—what Cox refers to as “the Three C’s: the course, the competition and the conditions”—for records to break.
“It’s definitely possible in the years to come,” said Cox.