Hoka Skyflow review

We believe the Hoka Skyflow is an excellent choice for:

• Runners who like other Hoka daily trainers but seek more cushioning underfoot, a roomier fit, or both.
• Those who found previous Hoka trainers like the Bondi lacking in energy return, as this model features a new supercritical midsole for a more responsive ride.
• Anyone in need of a highly cushioned yet stable daily trainer that excels on both short and long-distance runs.
• Hoka fans drawn to the innovative Skyward X who prefer a similar, more affordable option without a plate.

We think that runners who prefer a lightweight feel in their daily trainers might be disappointed with the Skyflow—it's simply too heavy to fit into that category. Fortunately, there are plenty of alternatives on the market, such as the Hoka Mach 6, which is also more affordable and shares the same foam, or the ASICS Superblast 2 for those willing to spend a bit more in a premium shoe.

In our view, the Skyflow may also not be the best option for those seeking an ultra-plush running experience. For a softer feel, we suggest exploring New Balance options like the 1080 v13 or the maximalist More v5, both featuring cloud-like Fresh Foam X midsoles.

We've highlighted how cushioned this shoe is, and our digital calipers confirm it—much like Shakira's hips, they don't lie!

With a heel stack of 39.3 mm, just shy of the 40-mm mark, it ensures that no rearfoot striker, regardless of weight, will lack cushioning in this area.

The forefoot turned out slightly thinner than we expected at 30.6 mm—more details in our drop test—yet there is ample foam underfoot.

Just like the heel, the situation is similar for midfoot and forefoot strikers—the Skyflow consistently performs on long distances, comfortably handling workouts exceeding 15 miles.

Measured to World Athletics standards, the heel-to-toe drop of the Skyflow clocks in at 8.7 mm, almost doubling the 5-mm drop claimed by Hoka.

This considerable difference likely stems because Hoka doesn't follow these standards. While this variation might slightly benefit midfoot and forefoot strikers, the 8.7 mm drop is considered versatile for all types of footstrikes and we're good with it.

We were surprised by the drop and the insole thickness—measuring at 5.1 mm, it's slightly thicker than what we typically encounter.

We've had our gripes with Hoka's use of regular EVA midsoles in their daily trainers—feeling a tad outdated and lacking in energy return. This time, however, there's a shift, with the introduction of a modern supercritical EVA formulation, similar to Brooks' DNA Loft v3, that brings a lively and responsive feel, meeting our expectations for its price range.

As for the midsole's softness, we encountered a well-balanced composition that avoids an overly plush sensation underfoot. Our 19.4 HA measurement confirms this feel.

As we said before, the midsole is crafted from EVA, so it inherently struggles in cold temperatures. Nevertheless, our tests revealed this EVA variant stiffens less dramatically compared to others, showing only a 25.1% uptick after 20 minutes in our freezer, which is a decent outcome.

Hoka is shifting away from their traditionally snug-fitting uppers to more spacious designs in their recent models, and we love it.

The Skyflow's toebox, measuring 98.6 mm, aligns with the 80/20 rule, comfortably accommodating most runners with ease.

The real standout change in the Skyflow is in the big toe area, which we measured at 77.7 mm. To put that in perspective, the Mach 6 (75.9 mm) and Clifton 9 (74.5 mm) are significantly more tapered and restrictive. We really hope that Hoka continues this trend in future models!

We also found that the vertical space is good enough, with a more rounded toe cap that offers ample room for your toes to move comfortably, enhancing the overall fit.

In our evaluation, we also found that the tongue of the shoe is semi-gusseted and equipped with an excellent, breathable elastic strap on each side.

Here in the lab, we really appreciate these subtle touches—the ones that often go unnoticed. Although it would have been more cost-effective to use a non-perforated fabric, Hoka opted to spend a bit more here, and we're glad they did.

Hoka has significantly enhanced stability in the Skyflow by implementing their Heel-focused Active Foot Frame technology, which on paper is a good call for this high-stack shoe.

But we are not sure. While this technology certainly boosts stability, it also introduces a downside—increasing the shoe's stiffness beyond the typical flexibility expected of a daily trainer.

Additionally, we've observed that the unusually wide midfoot compromises agility, which could be a dealbreaker for some runners that prefer a more natural running experience.

As we hinted earlier, Hoka has opted for a stiffer design to boost stability.

Indeed, our evaluations confirm that the Skyflow is noticeably more rigid compared to typical daily trainers, earning a 4/5 on our rigidity scale.

Similarly, the heel counter is notably stiff, yet it remains quite comfortable due to the ample padding surrounding it. For us, it merits a high 4/5 rating.

We discovered that Hoka also enhanced the stability of the Skyflow by widening the sole to 116.3 mm.

Comparatively, its little sister, the Mach 6, measures slightly narrower at 113.9 mm in this area. This adjustment contributes significantly to the improved stability of the Skyflow.

Our measurements showed that the heel of the Skyflow is 94.7 mm wide, slightly exceeding the width of average running shoes. This design is ideal for neutral heel strikers and, in our opinion, may also accommodate runners with very mild pronation issues comfortably.

We discovered that the Skyflow was somewhat stiffer than desired, both torsionally and longitudinally.

In our 90-degree bend test, it registered 31.2N—quite distant from the flexibility found in running shoes better suited for everyday activities such as walking the dog or gym workouts, like the Brooks Ghost 16.

The Skyflow underwent another 20-minute exposure in our freezer here in the lab, resulting in a 35.7% increase in stiffness.

The weight of the Skyflow isn't a major concern for us, though it's not outstanding either. At 9.9 oz or 282g, it's good enough for a max-stack daily trainer, and we're in peace with this outcome.

But Hoka is known for producing lighter shoes compared to competitors, and the Skyflow is somewhat heavier than similar models like the ASICS Novablast 4, which offers comparable cushioning and comfort.

So even though it's under 10 ounces and the first in the Skyflow series, we hope Hoka will create a lighter version for the next version that should arrive in 2026.

When we brought the Skyflow back to our lab after purchasing it, we were skeptical about the breathability of its creel jacquard upper due to its dense appearance and lack of visible ventilation holes.

However, our doubts were quickly went away during testing. Using our smoke-pumping machine, we discovered that the toebox ventilation was exceptional, earning a perfect score of 5 out of 5.

With the aid of a light, we identified the areas with superior ventilation in the Skyflow. It became evident that Hoka concentrated on enhancing airflow in the toebox, while the midfoot area remains denser than your average daily trainer.

Under the microscope, the jacquard mesh upper doesn't look very breathable, and without our smoke test, we might have continued to underestimate its ventilation capabilities. But airflow through the clearer, thinner blue zones was surprisingly efficient.

We also noted that the upper is excellently structured for comfort, featuring ample padding in the heel collar and tongue.

A reinforced toe cap adds a layer of durability, enhancing the overall value. Overall, it's a fantastic upper for the price.

Expecting that the Skyflow's top breathability might indicate a weaker upper, we put it to the test.

We subjected the mesh to a stress test using a Dremel at 5K RPM and 3.2N of force. The results were better than expected—we awarded its durability a solid 3 out of 5!

Hoka has historically had mixed results in this test—a crucial one for runners who experience friction in the Achilles area.

Fortunately, we discovered exceptional resistance in the heel lining of the Skyflow, which earned a remarkable score of 5 out of 5, a feat not many shoes accomplish in our lab.

Turning our attention to the outsole, we began by measuring the rubber's hardness using our Shore C durometer. The result was 79.3 HC, indicating the use of standard high-abrasion rubber that offers good grip and, we hope, at least average durability.

We noticed that Hoka aimed to reinforce areas typically prone to wear, yet much of the midsole remains exposed—a common trait for this brand. For those who tend to wear out outsoles quickly, a max-cushioned trainer with full-length outsole coverage, like the Nike Invincible 3, might be a better option.

We were eager to test the robustness of the Skyflow's rubber with our Dremel—so we got right to it!

After the test, it became clear that the Skyflow outsole delivers, showing a modest 0.8 mm indentation. While it doesn't match the toughest rubbers on the market, its durability is certainly sufficient to ease any concerns about its longevity.

Any doubts about durability were quickly dispelled when we discovered that the outsole boasts a thickness of 3.3 mm.

Hoka usually adds reflective elements to its running shoes, and we truly appreciate this commitment, as it carry no downsides and significantly enhance safety at night.

In the Skyflow, we were thrilled to see that they raised the bar for daily running shoes by incorporating 360-degree reflectivity!

During our review, we discovered that the Skyflow prioritizes comfort over weight reduction, with the tongue serving as a perfect example. Instead of adopting the ultra-thin 1.5 mm tongue from the Mach 6, Hoka opted for a plush, luxurious 9.6 mm tongue with three layers of foam.

We also loved the effective lockdown achieved by the simple lacing system. It features punched eyelets and offering the option to secure a runner’s knot if necessary. And that's all we want in a daily trainer.

While some recent Hoka designs have omitted the heel tab, the Skyflow includes one. We believe this non-essential feature marks the Skyflow as a pricier model within Hoka's lineup, highlighting its position among the higher-end trainers.

You can easily swap out the removable insole of the Skyflow for custom orthotics or higher-quality insoles from other shoes to boost comfort.

If you look closely at the picture, you’ll also notice that Hoka has incorporated a perforated strobel board—a nice addition to enhance ventilation. However, it would have been even better if they had paired it with a perforated insole.