Best Performance Running Shoes to Watch: Cloudboom Echo 3, Mach X and Prime X Strung V2

Introduction

This has been a big stretch for performance running footwear. Three names are dominating the conversation right now: the newly released On Cloudboom Echo 3, the freshly reviewed Hoka Mach X, and the leaked Adidas Prime X Strung V2 that appears to be landing soon.

Each shoe fills a different role: a low-profile marathon racer, a soft daily trainer with tempo capability, and a tall-stacked dual-plated speed machine. Here is what the early feedback and details tell us about each one, and which type of runner each shoe makes sense for.

On Cloudboom Echo 3

On’s third Cloudboom is the one that finally seems to have landed. It is a lower-profile marathon racing shoe with real Pebax foam in the midsole and a carbon fiber plate, which On continues to call its “speed board.” Early reviews from prominent running reviewers have been overwhelmingly positive, with feedback describing a fun, stiff-but-not-too-firm ride and a welcome low-to-the-ground feel. It has been called light, bouncy, and responsive, with some testers comparing it favorably to other top-tier super shoes.

The open question is exactly where it fits. Will it live more in speedwork territory, like the Adidas Takumi Sen, or is it firm enough to handle longer races such as half marathons and full marathons? The early read leans toward the low, light, and snappy workout profile, which makes it most interesting for runners who want a fast trainer-style racer for intervals and tempo days. On-foot testing will settle it, but the initial signs are genuinely promising.

Hoka Mach X

The Hoka Mach X also came out from under embargo, and the first impressions describe a fantastic but noticeably softer ride. Some reviewers report they could not really feel the plate doing much work while running, which is not necessarily a bad thing. Think of it along the lines of the Saucony Endorphin Speed 3: a soft, bouncy Pebax-style midsole paired with a nylon or plastic plate that stays in the background while the cushioning does the driving.

Positioning appears to be daily trainer with up-tempo ability rather than pure racer. As one early reviewer put it, this is more of an easy day shoe you can run tempo in. It will not replace a dedicated race-day weapon, but it competes squarely in the tweener space, giving you comfortable daily mileage while still letting you rip fast paces.

Adidas Prime X Strung V2

New leaked pictures suggest the Adidas Prime X Strung V2 will drop soon, and the changes look meaningful. It retains the same well-liked Strung upper and the same Continental rubber outsole as the first version, but the midsole gets updates: a more aggressive forefoot cutout and a puck of what appears to be a slightly different foam compound sandwiched between the top and bottom layers.

The bigger headline is the plate setup. This is a dual-plated racer, and while dual plates exist in track spikes, this is the first time that dual-plate construction is appearing in a road shoe. It keeps the known 50-millimeter stack height, and with elite results already being set in it, anticipation for the retail release is high. Casual runners will get their turn soon, and more detailed reviews should follow in the coming weeks.

The Rise of Non-Plated Running Shoes

Every shoe above is a plated shoe, and the plated-shoe craze has reached a fever pitch. That makes the non-plated segment one of the most interesting areas to watch, as brands start pouring development dollars into shoes that deliver fast-day performance with a more natural, simple ride.

Strong options already exist, including the Ultraventum-style Tempo, the Topo Athletic Cyclone, and the Brooks Hyperion Max. These are designed for fast days while keeping a comfortable, natural feel underfoot, and the segment is expected to keep growing as brands innovate beyond plates. If you prefer a super foam ride without the structure of a plate, this is the category to follow.

Conclusion

The performance running shoe market is splitting into clearer roles than ever. The On Cloudboom Echo 3 looks like On’s first genuinely great low-profile racer, ideal for snappy speedwork. The Hoka Mach X is the comfortable tweener that handles easy days and tempos alike. The Adidas Prime X Strung V2 pushes the limits with a dual-plated, 50-millimeter stack design that should shake things up when it launches. And if none of the plate hype appeals to you, the growing non-plated category offers a natural, comfortable alternative. Choosing well means matching the shoe to the role you actually need it to fill.