Running News Daily

Research shows economy gains at slower paces, but they’re smaller and not guaranteed.

It’s no coincidence that running records have been falling in droves in the era of super shoes. While researchers still may not be able to fully explain how the technology works, they have shown that the ultra-compressible foam, curved carbon-fiber plate, and rockered geometry that first appeared in the Nike Vaporfly 4% in 2017 provide competitive runners a 2.7–4.2 percent boost in running economy. In other words, thanks to these shoes, runners need 2.7-4.2 percent less energy to run the same pace—meaning that they can conserve that energy to run farther or expend it to run faster.

One caveat is that, until now, super shoes have been tested only at running speeds of 7:26/mile or faster. Translated into marathon times, that means the science is applicable to someone who runs a marathon in 3:15 or faster—a feat accomplished by only 21 percent of the 2021 Boston Marathon field.

However, new research has finally emerged that looks at whether the majority of runners get an edge from super shoes. The answer: probably yes, but less.

Research for Non-Elites

Dustin Joubert, Ph.D., a kinesiology professor at St. Edward’s University in Austin, Texas, likes to do research, in his words, “for the people.” This is how he came to conduct a study looking into whether super shoes, specifically the Nike ZoomX Vaporfly Next% 2, confer the same running economy advantage to athletes who run at slower paces.

“There’s a lot of people who don’t fit under the umbrella of the speeds that have been tested in all this laboratory research, and a lot of people are asking: Should I spend my money on this? Do they work for slower people?” said Joubert. “That was the next logical question to me.”

To answer the question, Joubert and his colleagues recruited 16 runners—eight men and eight women with prior-year 5K PRs averaging 19:06 and 20:18, respectively—and had them complete two sets of four 5-minute running reps on a treadmill. Each runner ran one set at a 12 kilometers/hour pace (8:00/mile, which would be marathon pace for a runner with a 5K PR of 22:15), and the other set at 10K/hour (9:40/mile, which would be on the slower end of easy pace for that same 22:15 5K runner). Within a given set, the runners tested two different shoes: they ran one 5-minute rep in an experimental carbon-plated shoe, the Nike ZoomX Vaporfly Next% 2, and the other rep in a control shoe, the Asics Hyper Speed. Then, the runners repeated the reps but reversed the order in which they wore shoes (e.g., Asics first, then Nike).

The researchers chose the Asics Hyper Speed as the control shoe because it lacks the technology of the Vaporfly (carbon plate and advanced foam) but matches its mass. This was an important variable to match because mass affects running economy; a heavier shoe will require more energy to move and could therefore confound results. One earlier study compared the Vaporfly to runners’ everyday training shoes, but most regular training shoes are more than 100 grams (3.5 ounces) heavier—the equivalent of about 40 pennies. Imagine lifting those pennies 55,000 times (the average number of steps in a marathon, for men; women take about 63,000 steps). That would require quite a bit more energy!

Economy Advantages for 3:30–4:15 Marathoners

The new study found that, on average, running economy was better in the Vaporfly than in the Hyper Speed. However, at these slower speeds, the improvements were smaller than at faster speeds: runners gained just 1.4 percent in running economy at 8:00/mile pace and 0.9 percent at 9:40/mile pace, compared to the 2.7–4.2 percent advantage runners gained at speeds of 7:26/mile or faster. (And, as we’ll see below, even those improvements came with a caveat.)

Joubert speculates that the reason for this difference comes down to how the foam in the shoes is working. Much of the running economy advantage comes from compressing the compliant/resilient foam in the shoes and then having that energy returned as the foam springs back. A faster runner who is generating larger ground reaction forces will compress the foam more than a slower runner who, because of their speed, isn’t generating as much ground reaction force. 

“The shoe is not creating energy for you; it’s only giving back what you put into it,” explained Joubert.

Not Everyone Benefits

Before you decide “an advantage is an advantage,” there is one other finding from this study that should give runners pause. While the results from the 16 test subjects showed a 0.9–1.4 percent average improvement in running economy, one third of the participants actually showed worse running economy when they ran at the 9:40/mile speed in the Vaporflys, compared to the control shoe. This finding diverges from the results of testing done on the Vaporflys at faster speeds, where runners experienced varying degrees of running economy improvement, but no one saw a detriment.

One possible reason has to do with the Vaporfly’s carbon plate. Research has shown that increased longitudinal bending stiffness, or the rigidity of a shoe underfoot, helps to improve running economy at faster speeds by reducing the amount of energy your foot requires as you land and push off from the metatarsophalangeal joint (where your foot connects with your toes). Joubert hypothesizes that, at slower speeds, the stiff carbon plate might stop saving runners energy and instead create a need for more energy in order to get “up over” the plate.

“If the plate’s really stiff, maybe at these slower speeds that’s an impairment to economy,” Joubert said.

Nathan Brown, a doctor of physical therapy at Pineries Running Lab in Stevens Point, Wisconsin, and senior contributor at Doctors of Running, said that this finding in particular helps to reinforce the shoe selection guidance he already offers his patients and the runners he coaches.

“If your goal of picking a shoe for race day is to get faster, but there’s a 30 percent chance that you get worse, I care more about finding the shoe that you like to run in than the shoe that may or may not give you a benefit,” said Brown.

So, Should You Wear Super Shoes?

If you’re an 8:40-9:00/mile marathoner, what should you do? Do you gamble on being in the 66 percent of responders and plunk down your cash for a pair of super shoes? Or do you stick with what you have?

Footwear is ultimately a personal decision, so here are a few more points to consider.

Choose a shoe that’s comfortable. 

If a super shoe feels uncomfortable, that might be an indicator that the shoe won’t help you make the economy gains you’re seeking. Joubert guesses that the comfort of your shoes could affect biomechanical aspects of your race-day performance, including economy. “I think if a shoe is uncomfortable, it’s probably not going to be economical,” he said.

Brown emphasizes focusing on comfort and confidence in a race-day shoe rather than “carbon [plate] or no carbon.” To determine whether it’s comfortable, Brown recommends trying your racing shoe in a few workouts and, if your goal race is a marathon, a few long runs in advance of race day.

“You want to feel comfortable [in the] shoe and confident psychologically,” he said. “To know what to expect on a long run from your race-day shoe can be a big deal for performance.”

Don’t wear a super shoe (or any one shoe) for every single run.

Heather Knight Pech, a decorated masters runner and coach for McKirdy Trained and Knight Training, tells every one of her athletes, from high schoolers to masters runners, to invest in a minimum of three pairs of running shoes: a trainer (e.g., Brooks Ghost), a lightweight trainer (e.g., New Balance Rebel), and a race-day shoe (e.g., Nike Vaporfly Next%). She then has them rotate among these shoes for several reasons. First, it decreases injury. Research has shown that runners who rotate their shoes decrease their injury risk by 39 percent compared to runners who wear the same pair for every run.

“Running is a repetitive motion, so you avoid overloading any one muscle, bone, or tendon,” said Pech. “And on the flip side, you’re simultaneously strengthening other structures by rotating your shoes.”

In his physical therapy practice, Brown has found that super shoes tend to reduce the loading on lower leg structures like the Achilles tendon and calf. As a result, he’s noticed a trend in repetitive stress injuries further up the chain, to the hamstrings and hip flexors, in runners who wear that shoe for most or even all of their runs.

The second reason Pech advises runners to rotate shoes is that it forces them to decide between shoes for a given run, which helps them gain a better sense of self-awareness. “We should be very dialed in to how we feel—that’s part of running training and racing,” said Pech. The saying she repeats is: different shoes for different runs for different days.

Look at a variety of styles and brands.

The Nike Vaporfly was the first high-stack carbon-plated shoe on the market, and as a result, it is arguably the most well known. Most brands now have a similar shoe, and while research shows they’re not yet up to par when it comes to running economy, that doesn’t mean different shoes won’t work better for certain runners based on foot anatomy, running stride, and even pure preference.

Pech points out that the Nike Vaporfly is a very high, very narrow, very bouncy shoe. The Saucony Endorphin Pro, on the other hand, she describes as “more stable underfoot, with firmer foam. It’s great for runners who want to feel the ground.” Meanwhile, the Asics Metaspeed, which is also slightly wider underfoot than the Nike Vaporfly, offers two versions between which runners can choose based on their running style: cadence (increasing their turnover) or stride (increasing their stride length).

“I think they’ve all caught up, in that, now, there are different shoes for different people,” said Pech.

Remember: economy isn’t everything.

While running economy does influence running performance, it’s only one small part; how well you eat and sleep, your level of anxiety, how consistently you trained, how well you tapered, and numerous other factors have an equal, if not greater effect on the time you ultimately run in any given race.

Therefore, if you’re a 3:30–4:15 marathoner and don’t want to shell out the money or risk finding yourself in the 33% “anti-responder” group, double down on some basics like pre- or post-run nutrition or even just sleep. Plus, when you beat your Vaporfly-wearing counterparts, you’ll never have to ask, “Was it the shoes?”

Some victories are measured by finish times. Others are defined by the obstacles overcome simply to reach the starting line.

For American Paralympic swimmer Ali Truwit, completing the New York City Marathon represented far more than covering 26.2 miles. It was the culmination of an extraordinary journey of survival, resilience, and unwavering determination that began with a life-altering shark attack just two years earlier.

On a crisp November morning in 2025, Truwit crossed the iconic finish line wearing a carbon-fibre running blade, fulfilling a promise she had made while recovering in a hospital bed after losing her lower left leg. The emotional milestone marked another remarkable chapter in one of the most inspiring comeback stories in modern sport.

The road to that unforgettable finish began only days after Truwit celebrated a major personal achievement. In May 2023, she completed her first marathon in Copenhagen alongside her mother. Just ten days later, while enjoying a graduation trip to Turks and Caicos with former Yale swimming teammate Sophie Pilkinton, tragedy struck.

While the pair were snorkelling, a shark attacked Truwit, severely injuring her left leg. Displaying remarkable courage, the two swam approximately 55 metres back to their boat, where Pilkinton—then a medical student—quickly applied a tourniquet that stopped the bleeding and ultimately saved Truwit's life.

Doctors were forced to amputate her lower left leg on her 23rd birthday.

Even in the darkest moments of recovery, Truwit's determination never disappeared. Reflecting on having recently completed her first marathon, she joked with one of the first responders that at least she had managed to run a marathon before the attack. The responder's simple but powerful reply would remain with her throughout rehabilitation: "You'll run another one."

Those words became a source of hope during the long and demanding road back.

Only weeks after surgery, Truwit began learning to walk on a prosthetic limb before gradually returning to the swimming pool. The process was anything but straightforward. The water that had once been her sanctuary became a source of painful memories, yet she refused to allow fear to define her future.

Her relentless work ethic soon produced extraordinary results.

Less than 16 months after the attack, Truwit represented the United States at the Paris 2024 Paralympic Games, producing a sensational performance to claim both silver and bronze medals. Standing on the Paralympic podium was a powerful reminder of how far she had come in such a short period, and she dedicated those achievements to everyone who had helped save her life.

Still, another dream remained unfinished.

The New York City Marathon carried deep personal significance. It was not merely another endurance event but a symbolic return to the city where her life had changed forever. On November 2, 2025, she lined up in Staten Island accompanied by 13 family members and close friends, all proudly representing her nonprofit foundation, Stronger Than You Think. Among them was Pilkinton, the friend whose quick thinking had preserved her life on that unforgettable day in the Caribbean.

Together, they covered every mile of the marathon before celebrating an emotional finish that Truwit later described as being "over the moon."

Completing a marathon on a carbon-fibre running blade presents challenges far beyond those faced by able-bodied runners. The prosthetic demands greater strength from the hips, core, and remaining leg while requiring exceptional balance, coordination, and endurance. Truwit's preparation combined months of disciplined training, patience, and mental resilience as she effectively taught herself how to run again.

Her story extends well beyond medals and marathon finishes.

Inspired by her own recovery, Truwit founded Stronger Than You Think, a nonprofit organisation dedicated to helping individuals overcome physical and financial barriers following limb loss. Recognising that sports prosthetics can cost tens of thousands of dollars and are often not covered by insurance, the foundation provides financial assistance for prosthetic devices, supports water-safety education, and promotes opportunities within Paralympic sport.

The organisation has already helped provide more than 11 prosthetic limbs, delivered nearly $200,000 in direct support, and funded over 4,000 hours of water-safety lessons benefiting more than 700 young people.

Throughout her journey, Truwit has remained refreshingly honest about the emotional challenges that continue to accompany recovery. She has openly acknowledged that healing is an ongoing process and that grief can still come in waves. Rather than portraying an effortless comeback, she has demonstrated that resilience is built through persistence, even on the hardest days.

Her remarkable transformation resonates far beyond elite sport. While few people will ever experience the trauma she endured, countless runners and athletes understand the frustration of injury, disappointment, or rebuilding after adversity. Truwit's journey serves as a powerful reminder that recovery is rarely linear and that courage is often measured by the willingness to keep moving forward despite uncertainty.

Now looking ahead to the Los Angeles 2028 Paralympic Games, Truwit continues to redefine what is possible. She is no longer known simply as the swimmer who survived a shark attack. She has become a Paralympic medallist, marathon finisher, advocate, and symbol of resilience whose story continues to inspire athletes around the world.

Her journey proves that while life can change in an instant, so too can the strength of the human spirit. Sometimes the greatest triumph is not returning to the person you once were, but discovering someone even stronger than you ever imagined possible.

Sprint and hurdles superstar Sydney McLaughlin-Levrone has entered an exciting new chapter in her remarkable life, welcoming her first child with husband Andre Levrone. The four-time Olympic champion and women's 400m hurdles world record holder announced the birth of their daughter, Savannah Michelle Levrone, who was born on Sunday, July 12, 2026.

The couple shared the joyful news with an emotional message celebrating the arrival of their daughter and expressing gratitude to everyone who supported them throughout the pregnancy. Sydney described Savannah as "our blessing and our joy," while expressing excitement and faith for the future that lies ahead for their growing family.

The announcement marks a deeply personal milestone for one of the most accomplished athletes of her generation. Renowned for redefining the women's 400m hurdles through a succession of record-breaking performances, McLaughlin-Levrone now embraces a new role beyond the track as a mother.

The timing of the announcement adds another layer of significance. Just days earlier, Sydney reflected on the 10th anniversary of qualifying for her first Olympic Games at only 16 years old—a breakthrough that launched one of the most decorated careers in modern athletics. Ten years later, her journey has come full circle with another life-changing milestone, underscoring that her greatest moments continue to extend beyond sporting success.

The arrival of Savannah Michelle Levrone has been met with an outpouring of congratulations from athletes, fans, and the wider sporting community, who have celebrated the couple as they begin this new chapter together. As Sydney McLaughlin-Levrone steps into motherhood, the athletics world will undoubtedly continue to follow her inspiring journey—both on and off the track.

Ethiopia's Tsige Gebreselama produced one of the standout road running performances of the season on Sunday, storming to victory at the prestigious Boilermaker Road Race 15K in Utica, New York, with a sensational course record of 47:29.

From the opening kilometers, Gebreselama controlled the race with remarkable composure and precision, maintaining a relentless pace that ultimately erased the previous course record and secured one of the fastest performances ever recorded on the historic course. Her commanding display further reinforced her reputation as one of the world's leading road and distance runners.

The Ethiopian celebration continued as Melknat Wudu crossed the finish line in second place in 47:44, completing a dominant one-two finish for her country. Kenya's Priscah Cherono claimed third in 48:14 after a determined effort, rounding out a world-class podium in a race featuring some of the finest distance runners on the international circuit.

The battle behind the podium remained fiercely competitive. Kenya's Everlyn Kemboi finished fourth in 48:28, narrowly ahead of compatriot Selah Busienei, who clocked 48:31 for fifth. Ethiopia's Netsanet Desta and Alem Nigus Tsadik followed in sixth and seventh respectively, while Kenya's Mercy Cherono secured eighth place.

American athletes also delivered encouraging performances on home roads. Veteran Stephanie Bruce finished ninth in 50:40, with Jackie Gaughan completing the top ten in 51:02 to cap a strong showing for the host nation.

Boilermaker Road Race 15K – Women's Top 10 Results

1. Tsige Gebreselama (Ethiopia) – 47:29 (Course Record)

2. Melknat Wudu (Ethiopia) – 47:44

3. Priscah Cherono (Kenya) – 48:14

4. Everlyn Kemboi (Kenya) – 48:28

5. Selah Busienei (Kenya) – 48:31

6. Netsanet Desta (Ethiopia) – 48:46

7. Alem Nigus Tsadik (Ethiopia) – 48:48

8. Mercy Cherono (Kenya) – 50:23

9. Stephanie Bruce (United States) – 50:40

10. Jackie Gaughan (United States) – 51:02

The women's race combined exceptional depth with remarkable speed, as several athletes broke the 49-minute barrier in a contest that showcased the global strength of elite road running. Gebreselama's record-breaking run now stands as a new benchmark in the rich history of the Boilermaker 15K, adding another memorable chapter to one of the United States' most celebrated road races.

Kenya's Alex Matata delivered a sensational performance to claim the men's title at the prestigious Boilermaker Road Race 15K in Utica, New York, producing a dominant run that underlined his growing reputation as one of the world's finest road racers.

Matata surged to victory in an outstanding time of 42:24, mastering the demanding course with a display of strength, speed, and tactical brilliance. His commanding performance secured a memorable triumph in one of the United States' most celebrated road races, adding another significant international victory to his career.

Kenya's success was further highlighted by Kiprono Sitonik, who produced an equally impressive run to finish second in 42:53, completing a remarkable one-two finish for the East African nation. South Africa's Adam Lipschitz rounded out the podium after clocking 43:14 to claim third place following a determined effort.

The race featured a highly competitive international field, with American athletes Reid Buchanan and Hillary Bor finishing fourth and fifth respectively, while another Kenyan, Victor Shitsama, added to his country's strong showing by taking sixth place.

Matata's victory once again showcased Kenya's enduring strength in global road racing, as its athletes continued to dominate major international competitions through exceptional endurance, tactical awareness, and relentless finishing speed. His performance in Utica not only thrilled the spectators lining the streets but also reinforced the depth of Kenyan distance running on the world stage.

Men's Top 10 Results – Boilermaker Road Race 15K

1. Alex Matata (Kenya) – 42:24

2. Kiprono Sitonik (Kenya) – 42:53

3. Adam Lipschitz (South Africa) – 43:14

4. Reid Buchanan (United States) – 43:38

5. Hillary Bor (United States) – 43:40

6. Victor Shitsama (Kenya) – 44:02

7. Futsum Zienasellassie (United States) – 44:32

8. Charlie Sweeney (United States) – 44:37

9. Sam Lawler (United States) – 44:54

10. Tyler Berg (United States) – 45:08

With another major road racing title added to his résumé, Alex Matata continued his impressive 2026 campaign while reinforcing his status as one of the leading names on the international road racing circuit. The Boilermaker 15K once again delivered a high-quality contest, with athletes from across the globe producing memorable performances in one of the United States' most prestigious road races.

Eliud Kipchoge's remarkable World Tour continued on Brazilian soil as the Kenyan marathon icon completed the New Balance 42K Porto Alegre Marathon, crossing the finish line in 2:18:39 to place 12th overall during the second stop of his ambitious seven-continent global running tour.

Competing against a strong international field, the two-time Olympic marathon champion displayed the resilience and determination that have defined his legendary career. While the result was not among the victories that have made him one of the greatest marathon runners in history, Kipchoge once again demonstrated the unwavering commitment that continues to inspire athletes and fans across the globe.

Morocco's Zineddine Ouria claimed victory in a superb 2:08:49, with Kipchoge finishing 9 minutes and 50 seconds behind the race winner after navigating the demanding course in Porto Alegre.

Kipchoge began the race with controlled and confident pacing, reaching 5km in 15:34 before passing the halfway mark in 1:05:07. As the race entered its decisive stages, the pace gradually slowed, but the veteran marathoner pressed on with characteristic determination, completing the 42.195-kilometre challenge in 2:18:39.

For many, the story will be told through the finishing position. But for those who truly understand greatness, this journey is about far more than medals, records, or podium finishes. Kipchoge's World Tour is a celebration of the sport itself—an opportunity to connect with runners across every continent, inspire the next generation, and continue living by the philosophy that has become synonymous with his career: "No Human Is Limited."

The Brazilian appearance also carried added significance, coming shortly after Kipchoge was permanently honoured in Porto Alegre with his footprints unveiled at the entrance of Parque Harmonia—a lasting tribute to his extraordinary impact on distance running and his enduring legacy in the sport.

Once a champion. Forever an inspiration. Legends do not stop inspiring when the victories become fewer; they inspire because they never stop showing up. Through every stride, every finish line, and every challenge embraced, Kipchoge continues to prove that true greatness is measured not only by what an athlete wins, but by the lives they touch along the way.

With the second stop of his World Tour now complete, Kipchoge will turn his attention to the next chapter of his global adventure when he lines up at the Melbourne Marathon in Australia this October. Wherever he races, millions will once again follow the journey of a man whose legacy extends far beyond the stopwatch.