Lucky number 4: The Nike Alphafly 4 is better than ever

Introduction to the Nike Alphafly 4

MEG: It’s wild that it’s been nearly a year since I got my hands on an early sample of the Alphafly 4. We first saw the shoe at The Running Event in 2025, and I (okay, mostly Thomas) somehow convinced the Nike team to get me a pair in time for The Marathon Project in December. 

I still vividly remember opening the box to a nearly all-white Alphafly proto with taped-up Air pods. I’ve never felt more like a pro athlete (imposter syndrome on full blast), and I couldn’t wait to race in the shoe. I slipped the new shoe on one foot and a fresh Alphafly 3 on the other, and it was immediately obvious which pair I’d be racing in.

The Alphafly 4 looks almost identical to its predecessor, but the updates are more substantial than they appear. The Atomknit upper keeps the same holey knit as before (dare I say Radical Airflow vibes?), but with much more stretch. The forefoot base is wider, which makes for a more stable ride. 

Underfoot is a brand-new foam, ZoomX LT. It’s still PEBA-based, but it’s much softer, and Nike says it’s up to 17% lighter than standard ZoomX with roughly 8% more energy return. Of course, there’s still a carbon plate, now a wider, sculpted Flyplate. Below that sits more ZoomX, the same formulation used in the Alphafly 3.

So what hasn’t changed? The stack remains 39mm in the heel and 31mm in the forefoot for an 8mm drop. The outsole is nearly identical, with the same Fast Shot rubber coverage. The weight is a hair lighter but basically the same: my W7.5 came in at 5.6 oz, compared to 5.7 oz for the Alphafly 3. And maybe the most shocking update/non-update of all? The price went down. The Alphafly 4 hits shelves October 29 for $280, down from $295.

Of course, if you've been following along, the internet nearly lost its mind when the shoe dropped in a very limited release earlier this month. The most common take? “We waited 2+ years for this tiny update?” It always amuses me when people have such strong opinions about a shoe they haven’t been able to buy, let alone try. I’ve had a prototype for a year and the production model for several months now, so let’s get into how it actually performs.

THOMAS: The Alphafly has been a darling here at Believe in the Run... well, except for version two. We'll glaze right over that one like a nagging knee pain you refuse to acknowledge. Train through it, champ.

Anyway, nothing on the market has matched the mechanical assist the Alphafly delivers with its Zoom Air pods, carbon plate, and ZoomX midsole. It's an anti-gravity, leg-saving machine. When your legs start fading late in a race, landing in the sweet spot gives you that gentle pop, a little nudge that says keep cruising. There isn't anything else like it. Well, there might be. Early 2027 will bring the Apex with double-stacked Air. I've spent the last month running in it, which makes this review a little more complicated.

So here's where I land: Nike owns the best mechanical assist technology right now. That's my opinion. Prove me wrong.

That used to be enough, but it isn't anymore. The new strategy for racking up wins is to go ultra-light and pair it with maximum cushion. I won't mention names, but one brand's $500 featherweight racer is sweeping podiums at every major.

So which is better? That's the question. Is it the right one? Every brand is dropping legit race day shoes now, including ones nobody saw coming like Skechers, TYR, and Topo. The real question isn't which shoe wins. It's which approach works for you.

Me? I float between both camps, but when I want that bounce off the toe that launches me forward, Nike is my only choice.

One more thing: Nike now has four race day options in the $145 Swooshfly, the $250 Vaporfly, the $280 Alphafly, and the $350 Apex. That's a full lineup to find your match, and my guess is Nike will add an ultra-light cushioned racer to the mix soon. Their athletes have to be asking for it.

What we like about the Nike Alphafly 4

MEG: I always start with aesthetics, which makes this part tricky: the proto and the production model I received came in very different colorways. One I love, and one I… do not, so we’ll save those comments for the section below.

The step-in feel of the Alphafly 4 is great. The Atomknit upper is one of the most comfortable race day uppers I can remember, stretchy yet supportive. Despite having almost no structure, it locks your foot in place, and you can crank down on the laces without feeling like you’re squeezing the top of your foot.

On paper, the midsole change looks minor, but it feels noticeably softer, especially side by side with the previous model. The ZoomX LT sitting right under your foot gives you more of that sink-in-and-bounce-back feel I love in a race day shoe, and it doesn’t take anything away from the bouncy Zoom Air pods. 

I was recently talking shoes with someone at a race, and we both agreed nothing compares to the Alphafly when you’re tired, and your form starts falling apart at the end of a marathon. If you’re fresh, fit, and running fast? Sure, there are faster, lighter options. But if you’re a mere mortal amateur runner (hi), the Alphafly delivers a bounce and pop in the late miles that’s unmatched.

Between the prototype and the production model, I’ve raced two marathons in the Alphafly 4 and logged 6-plus long-run workouts, plus plenty of strides and faster miles. I tend to land midfoot to heel, and this shoe just works for me. I’ve even done lab testing that suggests I could run faster in another shoe, but I’ve yet to find one that gives me the same confidence on the starting line. And after all, that’s what matters, right?

THOMAS: The Alphafly is still one of the most fun shoes you can run in. It consistently combines a high stack, big bounce, and light, smooth turnover in a way I can trust. It just hums. The AtomKnit upper fits well, with added lateral and medial support woven right in. Lockdown was never an issue, and the upper is as comfortable as it is breezy.

Meg nailed it describing the personality of the ZoomX LT. The AlphaFly 4 feels more dynamic throughout the midsole than the Alphafly 3. People griped that it didn't look like a major update, and maybe that's a good thing. We loved the Alphafly 3, so why blow it up?

Think of it like running into an ex you dated for a couple of years, and they've had a full glow-up. Yes, they're the same person, yet somehow better. The Alphafly 4 looks familiar, but everything is a little better, top to bottom. How you doin?!

It's still one of the easiest shoes to lock into set-it-and-forget-it cruise mode. That's where it shines for me. Get it up to marathon pace and let the rhythm carry you.

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What we don't like about the Nike Alphafly 4

MEG: I alluded to this earlier: the Hyperpink colorway of the Alphafly 4 I received is, for lack of a kinder word, hideous. I cannot for the life of me figure out why Nike (or any brand, for that matter) feels the need to paint midsole foams. And not just paint it, but paint it in a gradient!?! This is a race day shoe where every gram counts. Plus, I truly believe the paint compromises the foam. Maybe not in a major way, but again, this is race day, where every little bit matters.

Second, and more importantly, my proto Alphafly 4 was quiet. I’m talking sneak-up-on-you-mid-race quiet. The Hyperpink pair? It squeaked louder than any shoe I’ve ever heard for the first 5 to 6 miles. The noise does fade with wear, but it’s still far from quiet. I’m not sure what changed between proto and production, but somewhere along the way, the Alphafly 4 got loud.

THOMAS: STOP AIRBRUSHING AND PAINTING MIDSOLES. 

Look at the shoes with three stripes on them. They're bold, but they're simple. The AlphaFly 4 launch colorway looks like a bag of Flamin' Hot Cheetos. Every time I lace them up, I wipe my hands on my shorts to get rid of the imaginary chip dust.

I can confirm Meg's proto Alphaflys were stealthy. So I was surprised when I took my production pair out, and they squeaked, chirped, and clomped even more than the last Alphafly.

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Final thoughts on the Nike Alphafly 4

MEG: The Alphafly 4 remains one of the best race day shoes out there, especially for the marathon. The noise and colorway choices are questionable, but the performance still wins me over. The upper is comfortable and accommodating, the foam is light and bouncy, and the Air pods carry your legs through those tired late miles. Are there lighter, faster options out there? Absolutely. But at the end of the day, the shoe I’m most excited to race in is the one that feels like it’s pushing me forward. For me, that’s the Alphafly 4. And at a lower price than its predecessor? That’s a win for everyone.

THOMAS: Turns out you can buy confidence. Sure, you still have to do the training, blah blah blah, but strap on the Alphafly 4 and a little chill runs up your spine while Lightning McQueen whispers, "Speed, I am speed." It doesn't matter if you're chasing world records or running a four-and-a-half-hour marathon. You're ready to rip a PR.

I mentioned the Apex earlier. You'll have to wait for our full review on that one, but I'll leave you with this: it's mighty. Also, at $145, the Swooshfly is an instant tag and bag.

You can pick up the Nike Alphafly 4 on October 29, 2026, for $280 at Nike by using the shop link below.

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