Nike Alphafly 3 Review: The Fastest Marathon Shoe Nike Has Built

Introduction

The Nike Alphafly 3 arrives with serious expectations behind it. This is the follow-up to the shoe that set the marathon world record in Chicago, and the hype around the launch reflected that: pairs sold out in roughly 60 seconds on websites around the world. After a 30K marathon session, speed work, strides, and steady-state mileage in the shoe, the picture that emerges is of a racer that fixes the biggest complaints of the Alphafly 2 while keeping the outright speed.

The headline change is weight. In a UK size 12, the Alphafly 3 comes in at 269g, a 33g reduction from the outgoing model’s 302g. It is still slightly heavier than the Vaporfly 3, mainly due to the extra midsole foam and the two Air pods in the forefoot, but the difference is easy to feel when the two Alphafly generations are held side by side.

Who This Shoe Is For

This is very much a road racing shoe. The Alphafly line has traditionally been a half marathon and marathon tool, and while you could race shorter distances in previous versions, the weight drop here opens it up further. Many runners are already using it for everything from 5K and 10K races all the way up, simply because it is easier to carry over distance.

For race-day use, the spec reads like a modern super shoe: 40mm stack at the heel, an 8mm drop (32mm at the forefoot), a full-length carbon plate, ZoomX foam, and a neutral last. It is aimed at runners who want maximum propulsion on all-out efforts rather than an everyday trainer.

Main Strengths

The ride is the biggest revelation. Nike has made the midsole continuous, flowing all the way through the shoe, where the Alphafly 2 had a large gap in the middle. The result is a far smoother feel covering ground, with much less of the clunky, slappy sensation of the outgoing model. It now rides far closer to the Vaporfly than to the Alphafly 2, which matters for heel strikers and midfoot strikers in particular.

Comfort has taken a major step forward too. The most common complaint about the Alphafly 2 was irritation and even blisters on the inside of the arch, caused by pronounced stability elements in that area. Nike says it has sorted that out, and in testing the arch is noticeably less pronounced, with zero irritation across a 30K session and beyond. It is the most comfortable Alphafly yet: light, secure, and comfortable enough after 30K that extending to full marathon distance felt entirely feasible. Fit is true to size, and lockdown is excellent with nothing moving around inside.

Then there is the speed. This is arguably the fastest shoe of its generation to run in, with a lower perceived effort at pace that genuinely stands out. During marathon-pace work, the watch showed speeds that did not seem to match the effort being put in. The Air pods have been tweaked for a slightly greater range of motion, adding a bit more pop off the ground, and the lighter weight gives it a sharp turn of speed.

Things to Consider Before Buying

It is still an Alphafly. The unconventional feel of the Air pods has not gone away entirely, and despite the improvements, it remains a shoe for all-out efforts rather than daily use. The slappy noise is still present, though quieter than the Alphafly 2; run in a group and people will hear you coming.

Durability is an early question mark. Some visible wear on the outsole appeared after only around 50K, so the long-term lifespan may be shorter than more traditional trainers. The outsole itself uses two large, fairly grippy rubber patches under the Air pods plus two pads at the heel; grip feels good and sticky, and heel strikers should find the transition improved, but there is not much rubber overall.

Fit width is worth noting: the shoe comes in one standard width only, though it feels reasonably wide underfoot. Finally, the launch itself was chaotic, with retailer sites crashing and orders being refunded for lack of stock, so availability around launch days may require persistence.

Buying Advice

At £285 in the UK, roughly $285 in the US and around €310 in Europe, this is a small price increase of about £5 over the Alphafly 2. For a dedicated race-day shoe, the improvements justify the premium: the weight saving alone is meaningful over a full marathon, and the comfort fix removes the single biggest reason to skip this line. The official launch colorway follows the prototype editions, with the full release expected around the middle of March.

If you raced in and enjoyed the Vaporfly 3 but wanted more cushioning and propulsion for the marathon distance, the Alphafly 3 now offers that without the harshness of its predecessor. If you want a single shoe for training and racing, look elsewhere; this is a specialist tool and a very good one.

Conclusion

The Alphafly 3 earns a firm recommendation. It is lighter, smoother, more comfortable, and faster than the shoe it replaces, with the arch irritation that plagued the Alphafly 2 almost entirely designed out. The trade-offs, an unconventional feel, a loud ride, and question marks over outsole durability, are real but secondary to what the shoe does at race pace. For marathon and half marathon runners chasing their best time, this belongs at the top of the shortlist.