Nike Alphafly 4

Meet the Nike Alphafly 4, the lightest and most responsive Alphafly yet. Rebuilt from the ground up for marathon racing, it combines ZoomX LT foam, dual Air Zoom units and a carbon-fibre Flyplate to deliver more energy return with less weight. A refined Atomknit upper and new Fast Shot outsole complete a smoother, more efficient system designed to help runners hold speed, stay comfortable and push deeper into race day.

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Launching on 31 October 2026

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  • Flyplate + Air Zoom

    A carbon-fibre Flyplate works with dual forefoot Air Zoom units to deliver stability, propulsion and a smooth rolling sensation. Together, the system helps maintain forward momentum and responsive race-day speed deeper into the marathon.

  • ZoomX LT Foam

    New ZoomX LT foam is up to 17% lighter than standard ZoomX while delivering 8% more energy return. Layered with ZoomX around the Flyplate, it creates a softer, bouncier and highly cushioned ride for long-distance racing.

  • New Atomknit Upper

    The redesigned Atomknit upper delivers a more precise, secure fit with a lightweight seamless construction. Zoned midfoot cables, an integrated heel unit and moulded sockliner help keep the foot comfortably locked in over distance.

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Weight: 188g
Stack Height: 39mm Heel / 31mm Forefoot
Heel Drop: 8mm

Nike Alphafly 4: Built for Marathon Speed

The Nike Alphafly 4 is the lightest and most responsive Alphafly yet, rebuilt from the ground up for runners chasing speed over the marathon distance. Combining new ZoomX LT foam, updated Air Zoom units, a carbon-fibre Flyplate and a redesigned Atomknit upper, the Alphafly 4 brings together cushioning, propulsion and stability in Nike’s flagship long-distance racing shoe.

More Energy Return, Less Weight

Compared with the Alphafly 3, the Alphafly 4 delivers 10% more energy return while weighing 5% less in a Men’s US 8.5. Every major component has been refined to create a smoother and more efficient racing experience, helping runners conserve momentum and maintain pace as fatigue begins to build deeper into the marathon.

New ZoomX LT Foam

At the heart of the Alphafly 4 is Nike’s new ZoomX LT foam, a lighter evolution of its highly responsive racing foam. ZoomX LT is up to 17% lighter than standard ZoomX while delivering 8% more energy return, creating a softer, bouncier sensation without adding unnecessary weight.

ZoomX LT works alongside traditional ZoomX foam above and below the Flyplate, creating a layered cushioning system designed specifically for the demands of long-distance racing.

Carbon Flyplate + Dual Air Zoom

A wide carbon-fibre Flyplate provides the stability and propulsion needed to carry speed over long distances. Its signature curved shape works with the surrounding cushioning to create a smooth rolling sensation through each stride and encourage consistent forward momentum.

Dual Air Zoom units in the forefoot have also been updated for the Alphafly 4, delivering a softer, quieter and more responsive sensation while working with the Flyplate and ZoomX cushioning to produce powerful race-day propulsion.

A Lighter, More Secure Atomknit Upper

The redesigned Atomknit upper focuses on lightweight containment and comfort over the marathon distance. A seamless construction incorporates breathable open-knit zones, targeted midfoot cables, an integrated heel structure and a moulded sockliner to help keep the foot secure as pace and running form change throughout a race.

Fast Shot Outsole for Race-Day Grip

Underfoot, the lightweight Fast Shot outsole provides the traction needed to stay connected to the road without adding unnecessary weight. It completes a system where every element — foam, Air, plate, upper and outsole — is designed to work together for efficient long-distance racing.

How Much Does the Nike Alphafly 4 Weigh?

The Nike Alphafly 4 weighs approximately 188g in a Men’s US 8.5, making it 5% lighter than the previous Alphafly in the same size. It features an 8mm heel-to-toe drop, balancing high-performance cushioning with the aggressive geometry expected from Nike’s premier marathon racing shoe.

Nike Alphafly 4 vs Alphafly 3

The Alphafly 4 evolves the formula established by the Alphafly 3 rather than simply adding more cushioning. The new model is lighter, delivers greater energy return and introduces ZoomX LT foam, updated Air Zoom units and a redesigned Atomknit upper. The result is intended to feel softer and smoother while retaining the powerful propulsion that defines the Alphafly.

Designed for Half Marathons and Marathons

The Alphafly 4 is purpose-built for road racing, with Nike positioning it specifically for the half marathon and marathon. Its combination of high energy return, lightweight cushioning, forefoot Air Zoom and carbon-fibre propulsion makes it particularly suited to runners chasing personal bests over longer race distances.

The Flagship of Nike Racing

Sitting at the top of Nike’s road racing range, the Alphafly 4 is designed for runners who want maximum assistance maintaining speed over distance. Alongside racing models such as the Vaporfly, the Alphafly takes a more cushioned, highly propulsive approach aimed squarely at the demands of marathon racing.

The Nike Alphafly 4 is expected to arrive October 30 at The Running Company — available online and at selected stores across Australia.

Nike Alphafly 4 FAQ

When does the Nike Alphafly 4 release in Australia?
The Nike Alphafly 4 is expected to launch at The Running Company on October 30, 2026. Availability may vary between stores, with selected colours and sizes also available online.
What is new in the Nike Alphafly 4?
The Alphafly 4 introduces new ZoomX LT foam, updated Air Zoom units, a redesigned Atomknit upper and a lightweight Fast Shot outsole. Nike says the complete shoe delivers 10% more energy return than the Alphafly 3 while being 5% lighter in a Men’s US 8.5.
How much does the Nike Alphafly 4 weigh?
The Nike Alphafly 4 weighs approximately 188g in a Men’s US 8.5. Nike also lists approximately 208g for a Men’s US 10, so published weights can vary depending on the reference size.
What is the heel-to-toe drop of the Nike Alphafly 4?
The Nike Alphafly 4 has an 8mm heel-to-toe drop.
Does the Nike Alphafly 4 have a carbon plate?
Yes. The Alphafly 4 uses a wide carbon-fibre Flyplate designed to combine stability with propulsion. Its curved geometry works with the ZoomX cushioning and forefoot Air Zoom units to create a smooth, forward-rolling sensation.
What is ZoomX LT foam?
ZoomX LT is Nike’s new lightweight performance foam used in the Alphafly 4. Nike says it is up to 17% lighter than standard ZoomX while delivering 8% more energy return, helping create a softer and bouncier ride without increasing weight.
Is the Nike Alphafly 4 good for marathons?
Yes. The Alphafly 4 is specifically engineered for long-distance road racing and is designed around the demands of the half marathon and marathon. Its cushioning, carbon Flyplate and Air Zoom system are designed to help runners maintain efficiency and speed as fatigue increases.
What is the difference between the Nike Alphafly 4 and Alphafly 3?
Compared with the Alphafly 3, the Alphafly 4 is 5% lighter in a Men’s US 8.5 and delivers 10% more energy return. It also introduces ZoomX LT foam, revised Air Zoom units, a new Atomknit upper and the Fast Shot outsole.
Is the Alphafly 4 more responsive than the Alphafly 3?
Nike states that the Alphafly 4 delivers 10% more energy return than its predecessor. The updated cushioning system combines ZoomX LT, ZoomX, dual Air Zoom units and a carbon-fibre Flyplate to create a softer and more responsive racing experience.
What distances is the Nike Alphafly 4 designed for?
Nike positions the Alphafly 4 primarily as a half-marathon and marathon racing shoe. It is designed for runners who want maximum cushioning, energy return and propulsion over longer road racing distances.
Can I get fitted for the Nike Alphafly 4 at The Running Company?
Yes. The Running Company offers 1-on-1 footwear consultations across our stores in Australia. Our experienced team can help determine whether the Alphafly 4 suits your race goals, running style and preferred fit.