Hoka Skyward X vs Speedland x Under Armour Infinite Mega: Two Super Max Stack Heavyweights Compared

Introduction

Super max stack shoes have taken over the daily trainer conversation, and two of the tallest options out there are remarkably similar on paper: the Hoka Skyward X and the Speedland x Under Armour Infinite Mega. Both are wide, tall, heavy, and built for fun, protection, and high-mileage comfort. After putting real miles into both, the differences come down to stability, ride feel, and price behavior.

Specs and Stack: Almost Identical on Paper

Measured side by side, these two shoes are nearly twins. Both measure about 103 mm wide at the base, both come in around 39 mm of stack at the forefoot, and both weigh in at roughly 331 to 334 grams. Measured heel stack came in at about 48 mm for the Infinite Mega and around 46.5 mm for the Skyward X after more miles on it.

The Skyward X uses a dual foam construction with a supercritical EVA carrier, a PEBA race foam layer on top, and a carbon fiber plate sandwiched between them. The Infinite Mega is non-plated but also uses a firmer carrier foam with a soft PEBA drop-in insole on top that provides most of the squish. The Infinite Mega lists an 8 mm drop versus around 5 to 6 mm for the Hoka, but the Infinite Mega’s aggressive heel bevel and full-length rocker make the drop feel the same in practice.

Hoka Skyward X: The Established Favorite

The Skyward X has been around longer and has built a real following, and for good reason. It is not the most comfortable shoe in the category, but it has a distinctive trampoline-like bounce and a beautifully smooth, gentle rocker that tips the run along at almost any pace.

At relaxed paces the ride is pleasant but restrained, and the magic really shows up below roughly 7:40 pace, where the bounce and geometry start doing real work. The plate exists mainly to stabilize the tall stack, and it does that job well. Compared to the Infinite Mega, the platform feels more substantial, the ride feels more directed, and turning the legs over feels easier. It is firmer than most super max shoes in the midfoot and heel, but that firmness translates into structure rather than harshness.

Fit is true to size with a roomy but not wide toe box and good padding throughout. Some runners report arch irritation from the midsole, though that was not experienced here. The main drawback: Hoka rarely discounts this shoe, so $225 is effectively the price you pay unless you hunt the resale market.

Speedland x Under Armour Infinite Mega: The Upsot Challenger

The Infinite Mega brings Speedland’s high-performance trail shoe expertise together with Under Armour’s distribution and foam know-how, and it is far from the gimmick some assume it to be. The BOA dial lacing system, the same style used on ski mountaineering race boots, delivers a precise, secure fit quickly, and the step-in feel is exceptional thanks to a thick, soft drop-in insole.

On the run it feels like a slightly more comfortable Skyward X at first: more softness in the midfoot, less rigid feel because there is no plate, and a smooth, bouncy ride. But it asks something of you. The platform encourages a midfoot to forefoot landing, which feels less natural at slower paces, and stability lags behind the plated Skyward X. It also runs a touch long, fitting true to size but slightly roomy and wider than the Hoka.

Where it clearly wins: casual wear. The step-in comfort and dial fit make it a shoe you can happily walk around in, something the plated Skyward X never quite manages. One caveat to watch: some users report weak grip in wet winter conditions, which was not independently verified.

Pricing and Availability

Both shoes sit at the top of the market at $250 for the Infinite Mega and $225 for the Skyward X. Hoka almost never discounts the Skyward X, but Under Armour runs frequent promotions, and lightly used pairs of both shoes regularly surface on resale apps well below MSRP, sometimes under $150. If you are patient, neither shoe needs to be bought at full price.

Verdict: Which One Should You Buy?

Out of these two, the Skyward X is the more reliable pick. It is more stable, more directed, and easier to turn over at everyday paces, and it delivers its signature bounce and fun without demanding a specific landing pattern. For most runners logging daily mileage, it is the shoe to grab six days out of seven.

The Infinite Mega is still a genuinely good shoe. It has better step-in comfort, a roomier and more adjustable upper, and a smoother feel for casual use, and it is worth considering if comfort and versatility matter more than a locked-in, stable ride. But as a pure running daily, the Skyward X does it better.

Conclusion

Neither shoe is perfect, and neither needs to be. The Skyward X is the dialed-in, fun, reliable super max daily that earns its higher price through ride quality and stability, while the Infinite Mega is a comfortable, quirky alternative with a brilliant lacing system that shines off the run. Pick the Skyward X for running, the Infinite Mega for all-day comfort, and whichever one you choose, give it 50 to 60 miles before judging it fully.