Do super shoes work for slower runners?
Yes, on average, but by less than the hype suggests. A 2025 meta-analysis found a reliable drop in energy cost and a small improvement in time trials. The 4% figure comes from fast men. At about 10–12 km/h the gain is roughly 1%, individual responses vary widely, and a minority of slower runners may do worse.
What to do
- Expect about 1% at paces between 5:00 and 6:00 min/km, and up to about 4% only at around 4:15 min/km or faster. Between those paces there are no measurements, so expect something in between.
- Treat any gain as an average, not a promise. Some runners benefit far more than others, and some not at all.
- Get used to them at least 3–4 weeks before the race: first in marathon-pace segments, then in one or two long runs. This is common practice, not a tested rule.
- Wear them once or twice a week at most before the race, and keep your usual shoes for the rest of your running.
- If you get new pain in the middle or top of the foot, stop using them and see a clinician. If you have had a bone stress injury in the navicular or metatarsal bones, train in conventional shoes.
What counts as a super shoe
“Super shoe” is the everyday name for what researchers call advanced footwear technology: modern racing shoes, typically built around a carbon plate in the sole. Their benefit for fast runners is well known. The open question for most runners is whether they help at the paces recreational marathoners actually run.
They work on average
A 2025 meta-analysis pooled 17 crossover trials, in which the same runners tested both advanced and conventional shoes (AFT meta-analysis, 2025). Two findings stand out:
- Energy cost fell in the advanced shoes, with an effect size of g = −0.35. Runners used less energy to hold the same speed.
- Time-trial performance improved, with a smaller effect size of g = −0.23.
Effects of this size are small but consistent. The direction is clear: on average, these shoes make running at a given speed cheaper, and that carries over to somewhat faster time trials.
Where the 4% comes from
The widely quoted “4% better running economy” comes from an early lab study of high-calibre male runners at 14–18 km/h, roughly 4:17 to 3:20 per kilometre, testing a Nike prototype (Hoogkamer and colleagues, 2018). Its result was real for that group, but it was never a measurement of a 4-hour marathoner.
At slower paces the gain shrinks
When the shoes were tested at 10–12 km/h, that is 6:00 to 5:00 per kilometre, the average saving was about 0.9–1.4% (Joubert and colleagues, 2023). That is roughly a quarter to a third of the famous figure.
Averages also hide a spread. According to secondary reporting of the same study, 5 of 16 runners were worse in the advanced shoes at 10 km/h. A separate study from the Technical University of Munich found individual responses ranging from an 11% penalty to an 11% benefit (TUM study). Some runners gain a lot, many gain a little, and some lose.
So the fair answer for slower runners is: probably a small benefit, possibly none, and you can’t tell in advance which you will be.
What to expect at your pace
Putting the fast-runner and slow-runner data side by side gives a rough scale. Only the two ends have been measured.
| Race pace | Approximate marathon time | Likely average gain |
|---|---|---|
| 5:00–6:00 min/km | about 3:30–4:15 | about 1% (0.9–1.4% measured) |
| 4:15–5:00 min/km | about 3:00–3:30 | not measured; probably somewhere between 1% and 4% |
| Around 4:15 min/km or faster | about 3:00 or faster | up to about 4% |
At a 4:15 marathon, a 1% gain is worth about two and a half minutes. That is worth having, but it is far smaller than the gain from a planned fuelling strategy or from avoiding a training break. Shoes are one of the last things to fix, not the first.
Getting used to them
No trial has tested how best to introduce racing shoes. A common approach among coaches is to start at least 3–4 weeks before the race. Use them first in marathon-pace segments of a run, then in one or two long runs, so you know how your feet and legs feel late in a race. Keep them to one or two sessions a week and do the rest of your running in your normal shoes. This is expert practice, the weakest level of evidence, but it lets you test fit and comfort before race day.
Injury signals are early and uncertain
There are some warning signs, but they are at the hypothesis stage:
- A case series described five bone stress injuries of the navicular, a bone in the middle of the foot, in runners after they started using carbon-plated shoes (Tenforde and colleagues, 2023). A handful of cases can’t show that the shoes caused the injuries, or how common such injuries are.
- A lab study, so far seen only through press coverage, found more rearfoot eversion, an inward roll of the heel, in a carbon-plated racer (PM&R study, via Slowtwitch). That is a possible mechanism, not evidence of injury.
This is not a reason to avoid the shoes. It is a reason to take new pain in the middle or top of the foot seriously, and to be cautious if you have had a bone stress injury in that area before.
What we don’t know
- Most data come from the lab. Crossover trials measure energy cost and short time trials, not full marathons in recreational runners.
- The slow-pace numbers are thin. The Joubert result is reported as both 1.4% and 1.6% in different places, possibly from different measures, and the “5 of 16 worse” figure comes from secondary reporting, not the paper itself.
- The middle of the pace table is a gap. We found no measurements between about 5:00 and 4:15 min/km.
- We have not reviewed large race-result analyses of super shoes, so this page doesn’t say how much they change real marathon finishing times.
- The injury link is unproven. It rests on a few cases and one lab study.
- Some authorship details are unconfirmed. The authors of the 2025 meta-analysis and of the Munich variability study could not be verified.
- Commercial ties: the original 4% study tested a Nike prototype.
Sources
- AFT meta-analysis (2025). Meta-analysis of advanced footwear technology, energy cost and time trials.
- Hoogkamer et al. (2018). Energy cost of running in marathon racing shoes in high-calibre runners.
- Joubert et al. (2023). Advanced footwear at slower running speeds.
- TUM study. Individual variability in response to advanced footwear.
- Tenforde et al. (2023). Navicular bone stress injuries after carbon-plated shoe use.
- PM&R study, via Slowtwitch. Rearfoot eversion and bone stress markers in a carbon-plated shoe.
Last reviewed 13 November 2026.