The ASICS METASPEED SKY TOKYO is an ultralight, carbon-plated super shoe designed for runners who speed up by lengthening their stride, in races from the 5K to the marathon. It sits between the METASPEED RAY, which is lighter but even less stable, and the EDGE TOKYO, the better pick for runners who speed up by taking quicker steps. It's bouncy and well-cushioned, which makes holding race pace more efficient while protecting your legs over the full marathon distance. However, the soft, narrow heel is wobbly, especially for heel strikers or when fatigue sets in, and the aggressive design makes it a poor choice for daily training.
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Our Verdict
The ASICS METASPEED SKY TOKYO is an excellent choice for half-marathon and marathon racing. It combines an ultralight weight with deep cushioning to provide a nimble shoe that delivers good cushioning over the distance. The superb forefoot rebound and good rocker help to make finding and holding race pace very easy and efficient. However, the soft, narrow platform can be hard to control when tired late into a race.
Exceptionally light build is easy to turnover at race pace.
Deep cushioning holds up well over long distances.
Forefoot rocker makes shoe easy to roll through stride.
Energetic forefoot makes race pace very efficient.
Soft platform can be hard to control when fatigued.
Narrow heel isn't very suitable for heel strikers.
The ASICS METASPEED SKY TOKYO is a great pick for 5K and 10K racing. The very light build and energetic forefoot make it easy to turn over at pace, and the stiff, assistive forefoot delivers plenty of propulsion through the stride. However, the forefoot is quite soft, which limits its appeal if you want a firm and secure toe-off.
Exceptionally light build is easy to turnover at race pace.
Forefoot rocker makes shoe easy to roll through stride.
Energetic forefoot makes race pace very efficient.
Soft forefoot limits how stable toe-off feels.
The ASICS METASPEED SKY TOKYO is a decent pick for long runs overall. Its great cushioning delivers a protected ride on extended efforts; it's light and energetic enough to provide an efficient ride that never feels cumbersome underfoot. However, the aggressive, unstable ride means this isn't a shoe for cruising. It performs best on progressive efforts or those with blocks of your target race pace.
Deep cushioning holds up well over long distances.
Forefoot rocker makes shoe easy to roll through stride.
Energetic forefoot makes toe-off very efficient.
Soft platform can be hard to control when fatigued.
The ASICS METASPEED SKY TOKYO is a sub-par pick for daily training. Despite being very light and impressively cushioned, this is a shoe intended for racing. Its plated design and unbalanced geometry prioritize an aggressive mid-to-forefoot strike pattern at faster paces, and the energetic platform is far too unstable for relaxed miles.
Very light with great impact reduction.
Build is too aggressive for relaxed miles.
Soft platform is too unstable for daily training.
Heel rocker offers minimal support for heel strikers.
Changelog
- Updated Oct 26, 2026: We've converted this review to Test Bench 1.0! This update adds Traction and Outsole Durability verdict scores to the review, making it easier to make a buying decision. Read the changelog for a full list of changes.
- Updated Sep 30, 2026: We've updated this review to Test Bench 0.16, expanding our coverage with new tests for breathability, water absorption, and drying time. For more details, see the changelog.
- Updated Jul 16, 2026: We've converted this review to Test Bench 0.15, which replaces Responsiveness with three specific performance usages: Bounciness, Snappiness, and Roll. To read more about the changes, see the changelog.
- Updated Jul 09, 2026: We've converted this review to Test Bench 0.14, which adds new lace-specific results. We've included a close-up photo of the laces, as well as details including lace type, width, thickness, and stretch. To read more about the changes, see the changelog.
- Updated Jun 30, 2026: We've converted this review to Test Bench 0.13, which identifies the different foams used in the shoe's midsole. We've included a microscopic image of the foam cells to give you an idea of what the microstructure looks like. To read more about the changes, see the changelog.
- Updated Jun 17, 2026: We've converted this review to Test Bench 0.12, which fixes how we measure firmness, a component of the Stability and 5K/10K Racing usages. There may be inconsistencies between the text and the scores for these usages, but the scores should still be considered valid. We've also brought back the Energy Return score and added two new usages: Daily Training and Long Run. To read more about the changes, see the changelog.
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Updated Apr 15, 2026:
We've replaced the Energy Return usage box with Responsiveness, which incorporates four additional tests, and updated the text accordingly.
- Updated Apr 15, 2026: We've converted this review to Test Bench 0.11, adding two new rocker measurements to the Design section, and three new responsiveness tests to the Performance section. The Energy Return usage score has been replaced with Responsiveness. Check out the details in our changelog.
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Updated Feb 16, 2026:
We updated the review to include text for the full set of new fit tests and the corresponding usage box, which were recently added to our test bench.
- Updated Feb 16, 2026: We've converted this review to Test Bench 0.10, adding a new set of fit tests to the Design section and an overall fit performance usage. Check out the details in our changelog.
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Updated Nov 05, 2025:
We wrote the text of this review to reflect scores from our latest Test Bench update.
- Updated Oct 28, 2025: We've converted this review to Test Bench 0.9, which adds a Forefoot Long Run Cushioning test to our performance section. Read more in our changelog.
- Updated Oct 24, 2025: We've converted this review to Test Bench 0.8.2, which updates our methodology for the impact force range used in our compression tests to improve their accuracy. This also affects all usage and performance usage boxes using those compression tests as score components.
- Updated Oct 24, 2025: Review published.
- Updated Jun 26, 2025: Our testers have started testing this product.
- Updated Jun 20, 2025: The product has arrived in our lab, and our testers will start evaluating it soon.
- Updated Jun 20, 2025: We've purchased the product and are waiting for it to arrive in our lab.
We've bought and tested more than 300 running shoes. Every pair purchased with our own money, never supplied or sponsored by brands. Our data-driven tests are designed to go beyond marketing claims, and since every shoe goes through the exact same methodology, you can directly compare results to find the right pair for your needs.
Test Results
Design
The ASICS METASPEED SKY TOKYO is exceptionally light even by super shoe standards, so it feels effortless to keep pace and stay fresh late into workouts. If your top priority is shaving every gram for maximum efficiency, the ASICS METASPEED RAY trims even more. On our scale, there was a considerable weight variation between the left and right shoes, but it's likely pair-specific.
The ASICS METASPEED SKY TOKYO uses a dual-density foam setup. The PEBA-based FF Turbo+ sits above the plate to provide structure and support, whereas the FF LEAP sits beneath for quick rebound and highly energetic turnover. The new midsole composition makes it feel notably softer and springier than the previous ASICS METASPEED SKY PARIS while staying efficient underfoot, which makes it easy to lock into goal pace without expending too much energy.
Energy Return
The ASICS METASPEED SKY TOKYO returns a superb amount of energy overall. Though the forefoot is slightly more efficient than the heel, both deliver an energetic ride that makes holding faster paces less tiring.
Forefoot rebound is absolutely outstanding.
Heel still delivers amazing rebound.
Superb energy return in the forefoot.
Amazing rebound in the heel.
This shoe delivers superb pop up front, returning a similar amount of energy as the ASICS METASPEED RAY, thanks to FF Leap foam sitting under the plate and FF Turbo+ foam above it, a layout that compresses quickly then snaps back for a lively toe-off. It feels more energetic than the ASICS METASPEED EDGE TOKYO's flipped setup, rewarding runners with elastic rebound that makes uptempo pacing feel easy to maintain.
Stability
The ASICS METASPEED SKY TOKYO has sub-par stability. The soft heel is very narrow and provides a small platform to land on relative to its height, so heel strikers will find it very wobbly. Though the arch and forefoot are wider than the heel, they're still not particularly generous, and much like the heel, they're quite soft, so the shoe asks a lot from your stabilizing muscles to keep your stride in check.
Soft platform can be hard to control when fatigued.
Narrow heel isn't very suitable for heel strikers.
Soft platform can feel wobbly.
The forefoot sits in a sweet spot: firm enough to add some snap at toe-off, yet compliant enough to avoid too much harshness. However, it will feel a lot less firm in that region than other super shoes, such as the Nike Vaporfly 4.
Cushioning
The ASICS METASPEED SKY TOKYO is an impressively cushioned shoe overall. Both the forefoot and heel do a great job of reducing impact from the road, and the shoe offers good protection over the course of a marathon.
Great cushioning in the forefoot and heel.
Midsole holds up well over the course of a marathon.
The ASICS METASPEED SKY TOKYO has impressive forefoot protection. It feels cushioned without dulling the pop, making faster efforts comfortable while maintaining that responsive feel that defines the shoe.
The ASICS METASPEED SKY TOKYO offers very protective heel cushioning that keeps impacts comfortable without turning too mushy. However, at very high forces, it will feel less cushioned.
The ASICS METASPEED SKY TOKYO offers very good long-run protection, but forefoot protection fades a bit as the distance piles up. With the plate sitting high in the midsole, it meets the force coming from the foot early and gets in the way of the midsole trying to absorb it, so the FF Turbo+ foam layer above the plate ends up taking more of the initial shock. Over repeated impacts, this reduces the cushioning capabilities of the foam at a faster rate than the ASICS METASPEED EDGE TOKYO, with its flipped dual-midsole layout. That said, the SKY TOKYO remains a great pick for distances up to a half or full marathon.
Traction
The ASICS METASPEED SKY TOKYO has adequate traction overall. It provides dependable grip on both dry and wet concrete, making it a suitable racer for courses on those surfaces. Grip on smooth, wet surfaces such as painted road markings and metal covers is acceptable, though less secure than on concrete. Fine gravel and mud are clear weaknesses, so it isn't a good match for race routes with loose or muddy sections.
Dependable grip on dry and wet concrete.
Poor grip on fine gravel and mud.
Outsole Durability
The ASICS METASPEED SKY TOKYO has subpar outsole durability, mainly because of its vulnerable heel. The forefoot rubber resists abrasion well, but the material under the heel wears more readily, leaving much of the heel foam exposed to the ground. There are also uncovered areas up front, though they are less extensive. If you plan to use this shoe for repeated workouts, wear is a particular concern, especially if you tend to scuff the back of your shoes.
Forefoot rubber resists abrasion well.
Heel outsole material wears readily.
Extensive exposed heel foam is vulnerable to scuffing.
The forefoot rubber resists abrasion well and should handle repeated scuffing better than the material under the heel. The heel wears a lot more. Runners who usually wear down their outsoles at the back have more reason for concern than those whose wear is concentrated beneath the forefoot rubber.
A large amount of foam is exposed around the heel, leaving it poorly protected against scuffing. The forefoot has more rubber coverage, but a large cutout on its outer side leaves more foam exposed than on the ASICS METASPEED EDGE TOKYO. This gives the ASICS SKY TOKYO's forefoot less protection against scraping.
Wet & Warm Weather
The ASICS METASPEED SKY TOKYO performs fantastically in wet and warm conditions. Its superb breathability manages heat extraordinarily well, so your feet won't overheat deep into races. The upper also absorbs very little water and dries quickly, so if you run in the rain, it won't become too cumbersome and will be dry the next day.
Incredibly breathable so feet won't overheat.
Absorbs very little water so never cumbersome on foot.
Dries in under a day after getting fully soaked.
This shoe has fantastic breathability. There's a remarkable amount of airflow across the whole shoe, so your feet won't overheat during races.
This shoe dries incredibly quickly after being fully soaked. It takes a bit more time than shoes like the adidas Adizero Adios Pro 5, but downtime after wet runs is minimal.
Bounciness
The ASICS METASPEED SKY TOKYO has a very good amount of bounce. Though the midsole doesn't compress particularly deeply, the superb overall energy return of the shoe gives the ride enough of a trampoline-like sensation.
Limited compression depth means it's not as bouncy as it could be.
The forefoot doesn't compress as deeply as the heel, but thanks to the superb energy return, the forefoot still has some spring.
The heel of this shoe compresses decently enough. It's not as deep as in shoes like the ASICS METASPEED RAY, but it still delivers a good amount of bounce.
Snappiness
The ASICS METASPEED SKY TOKYO has very good snappiness. The forefoot does a great job of resisting bending and returns an amazing amount of energy when it springs back, delivering a propulsion sensation through the stride. The rocker angle does a great job of pushing you off your toes quickly, too. However, the soft forefoot dilutes a bit of that bite and juice.
Forefoot springs back amazingly to deliver an efficient toe-off.
Impressively stiff forefoot delivers great leverage and propulsion.
Rocker angle promotes fast turnover.
Soft forefoot limits punch through late stance.
The forefoot of this shoe takes an impressive amount of force to bend, so it provides a great amount of leverage. It's also quite rigid, helping deliver a stiff, snappy toe-off.
Though not as aggressive as shoes like the PUMA Fast-R NITRO Elite 3, this shoe's forefoot rocker still does a good job of moving you through late stance. It starts late and offers great propulsion through the stride.
Roll
The ASICS METASPEED SKY TOKYO has good roll. The stiff, pronounced build of the forefoot guides your foot well through toe-off. However, the heel does a bad job of moving you into midstance, so the shoe works best for midfoot and forefoot strikers.
Stiff rocker provides good assistance through stride.
Forefoot rocker helps guide you through late stance well.
Heel rocker does a bad job of moving you into midstance.
The rocker of this shoe resists flattening well, holding its shape enough when you load the forefoot. This means it offers good assistance through the stride.
True To Size
The ASICS METASPEED SKY TOKYO fits with a distinctly race-snug feel, running a bit tight in length and in width through the forefoot and arch, which can feel restrictive if you have a broader foot or prefer a more relaxed fit for longer runs. The good news is that the toe box height stays true to size, so you still get a good amount of vertical room over the toes. Overall, it's a secure, performance-first fit that works best for narrow-to-average feet, while runners who want a little more breathing room will likely be happier sizing up.
Good vertical room over the toes.
Race fit runs tight through forefoot and arch.
Length is shorter than our reference fit.
This shoe is a bit short in length. It won't bother everyone, but runners who prefer more breathing room will likely be happier if they go up half a size.
In keeping with the shoe's racing design, the forefoot is a bit narrow. Those who like a snug racing fit will be fine, but runners who want more room should size up.
Popular Running Shoe Comparisons
The ASICS METASPEED SKY TOKYO is a high-performance racer aimed at stride-driven runners. Compared with the PUMA Fast-R NITRO Elite 3 and Nike Vaporfly 4, it's much less aggressive through toe-off, making it better suited to runners who prefer a softer, more energetic ride. Within ASICS' race lineup, the SKY TOKYO sits between the ASICS METASPEED RAY and ASICS METASPEED EDGE TOKYO. The SKY suits mid-to-forefoot strikers who lengthen their stride as they speed up, the EDGE is better suited to heel-to-midfoot runners, and the RAY prioritizes maximum rebound and minimal weight at the expense of stability.
For more options, check out our recommendations for the best running shoes, or more specifically, for the best long-distance running shoes and the best shoes for running a marathon.
The ASICS METASPEED SKY TOKYO is a better marathon racer overall than the Nike Alphafly 3. It's lighter, significantly more energetic, and more cushioned. The Nike shoe is much more stable, fits more predictably, and gives you more assistance through push-off, making it the better first race shoe if you're newer to carbon-plated racers. Get the ASICS if you want maximum speed and raw performance; get the Nike if you want more security and a more forgiving race-day setup.
The ASICS METASPEED SKY TOKYO is a better racing shoe overall than the adidas Adizero Adios Pro 4. It's dramatically lighter, better cushioned, and a bit more energetic, giving it the edge for both marathon and shorter-distance racing.
The ASICS METASPEED EDGE TOKYO is a better marathon racer than the ASICS METASPEED SKY TOKYO if you land on your heels or run with quick, short steps. It's more stable and works particularly well over the marathon. The SKY TOKYO is bouncier and suits runners who land farther forward and speed up by lengthening their stride.
The ASICS METASPEED SKY TOKYO is a better racing option than the adidas Adizero Adios Pro 5 for runners who prioritize low weight and high energy return. It's lighter and returns more energy at both the heel and forefoot while providing broadly similar initial cushioning. The adidas is better if maintaining forefoot protection over a longer race matters more to you. It also offers more width around the ball of the foot and a slightly more stable feel, so it's a safer choice if you're not chasing every last percent of efficiency.
The ASICS METASPEED RAY is a better racing shoe overall than the ASICS METASPEED SKY TOKYO. It's lighter, more cushioned, and bouncier, while offering essentially the same energy return. The SKY TOKYO is much less soft underfoot and provides more assistance through the stride, making toe-off more forceful and controlled. Get the RAY if you want maximum cushioning and minimum weight; get the SKY TOKYO if you prefer more propulsion and a firmer feel underfoot.
The ASICS METASPEED SKY TOKYO and PUMA Fast-R NITRO Elite 3 are similarly capable race shoes, but the ASICS is the better option if you want a lighter, less aggressive setup. It gives slightly more energy back and is easier to control, while the PUMA provides slightly more cushioning and much more assistance through the stride.
The ASICS METASPEED SKY TOKYO is a better overall racing shoe than the Nike Alphafly 4. It's noticeably lighter, returns more energy, and feels quicker when you push off, making it a strong choice across shorter and longer races. The Nike has a softer feel and more protection under the forefoot, particularly late in a marathon. At similar prices, choose the ASICS if you prioritize low weight and a quicker response; choose the Nike only if you prefer extra protection over long distances.
The ASICS METASPEED SKY TOKYO is abetter racing shoe overall than the Saucony Endorphin Elite 3. It's significantly lighter and better suited to 5K and 10K racing, while offering slightly more energy return. The Saucony is much heavier, though bouncier and more stable, so it's easier to trust when tired. Get the ASICS for pure racing performance; get the Saucony if you value stability and comfort more.
Differences Between Sizes And Variants
We bought and tested the ASICS METASPEED SKY TOKYO in men's US size 9, as noted on the label for our pair. The pair we purchased is the Flash Red/Black colorway. There are currently no wide variants available. The design section applies only to the exact model we tested, but we expect other sizes and gender variants to perform similarly.
