No, you’re not imagining things.
Professional runners left and right are shattering records, well, left and right.
Most recently, Ethiopia’s Gudaf Tsegay demolished the women’s 5000-meter world record, running a speedy 14:00.21 at the Diamond League Prefontaine Classic.
The question on everyone’s minds is, ‘Are super shoes — the carbon-plated footwear promising big gains and energy return — behind all these faster times?’
If you ask Nike, the answer would be yes. The brand touted their much-sensationalized Nike Vaporfly 4% as shoes that could improve running economy by 4 percent on average in 2017. Their Next Percent promised even greater benefits, and super shoe production hasn’t slowed down since.
While Nike did their own research to back up their claims, more recent research shows that super shoes may not be all foam and faster times. And for upwards of $250 per pair, you should probably know what you’re getting into before you invest.
Here are 3 recent studies on super shoes so you can make an informed decision before you buy.
1. The benefits of super shoes may not translate to recreational runners
While initial studies found that carbon-plated shoes improve running economy in elite athletes, more recent studies have found that improvements may not translate to recreational runners running at a less aggressive pace. A 2023 study published in the The International Journal of Sports Physiology and Performance (IJSPP) found that subjects running at slower speeds improve their running economy by just a fraction compared to faster athletes.
In this particular study, 16 runners ran at speeds of roughly 9:40 mile pace and 8:03 mile pace in both Nike Zoom Vaporfly Next % 2 shoes, and a control pair of shoes that did not have a carbon-fiber plate. Runners who ran at 9:40 pace in super shoes improved their running economy by .9 percent on average. However, at 8:03-mile pace, their running economy improved 1.6 percent. TL;DR? The slower you run, the less benefits these shoes may have to offer. Read the full study here.
2. Super shoes may make you more susceptible to stress fractures.
A 2023 opinion article published in Sports Medicine featuring five separate case studies warns that runners wearing carbon-plated footwear may be at increased risk for bone stress injuries due to the alterations in biomechanics and cadence that occur due to the shoe. In this particular investigation, runners using carbon-plated footwear had decreased cadence and longer steps, as well as a longer flight time, increasing the force exerted on the foot with every step. Additionally, peak vertical ground reaction forces and vertical impulse step were higher in runners using carbon-plated footwear, further increasing stress and loading on one’s joints. Authors of this investigation warn runners who want to wear super shoes to start wearing them gradually (first every other day, or only for shorter runs) to avoid injury. A second study published in the Journal of Biomechanics found that thicker carbon-plates (3mm) placed just above the outsole of the shoe (or “low-loaded” plates) may decrease the amount of metatarsal stress and help reduce injury risk. While more studies definitely need to happen before we can definitively say anything, it’s definitely important to factor in before purchasing your first pair.
3. “Nothing new on race day” still prevails
While some runners habitually run in super shoes, others sport them briefly on special occasions — like race day or during a time trial, with hopes of improving performance. A recent pilot study found that super shoes may not have the same power as caffeinated GU at mile 18 of your marathon — in fact, they could be doing the opposite. This particular study compared fitness between runners wearing racing flats and those wearing super shoes, and found that while both groups improved running economy over the 8-week intervention period, the group wearing racing flats improved more. Authors of the study hypothesize that participants will improve running economy most efficiently when wearing the shoe they typically train in due to biomechanical adaptations that need to happen when training in a new shoe. While more studies are needed to fully investigate this, the moral of the story is: If you only wear super shoes on race day for a speed boost, you might not be fully repeating the benefits because your body hasn’t adapted to how they affect the way you run.
Curious about super shoes? Check out the full studies for more information.






