Skip to content
JAEN
Nike

Alphafly 4

RacingRelease date 2026-09-17Global

Alphafly 4 is a marathon racer combining ZoomX LT and ZoomX foam around a carbon-fiber Flyplate, with two forefoot Air Zoom units. Its seamless Atomknit upper uses midfoot cables and an integrated heel structure to hold the foot, while a molded liner adds comfort. A FastShot outsole completes the race-day package.

Intended uses:
Race, Marathon

Specs

Weight
188g
Of 930 known values: 37 lower, 3 equal, 890 higher. The marker uses the midpoint of equal values.
lighterLower 4.3%, including ties / average -80g
Drop
8mm
Of 939 known values: 469 lower, 265 equal, 205 higher. The marker uses the midpoint of equal values.
Standard64.1th percentile (tie midpoint) / average +1.2mm
Stack (heel/forefoot)
39 / 31mm
Of 774 known values: 587 lower, 35 equal, 152 higher. The marker uses the midpoint of equal values.
higherUpper 24.2%, including ties / average +4.7mm
Carbon plate
Yes
17% of 850 known models have carbon plates
Midsole
ZoomX LT / ZoomX / Air Zoom
Outsole
FastShot
Reference price
$280
US price
Weight measurement and plate details
Weight note
Nike US Product Details lists approximately 188g for men's US8.5/women's US10. The same page's tech section lists approximately 208g for men's US10. These are different sample sizes; no size conversion is applied.
Plate note
The exact official release explicitly identifies a carbon-fiber Flyplate with two forefoot Air Zoom units.

Prices and release dates by market

3 markets are registered. Values are shown as published for each market: no currency conversion and no guessed days or months. Reference prices are not current shop prices.

Reference prices and release dates by market
MarketReference priceRelease
United StatesUS
$280Shown above
Not registered
GlobalNot registered
2026-09-17Shown aboveOnline launch
2026-10-29General release
JapanJP
¥39,600Tax incl.
Not registered

Changes from the previous model

A comparison with the registered values for Nike Alphafly 3.

In the registered data, weight is 30g lighter at 188g, heel stack is 1mm lower at 39mm, and forefoot stack is 1mm lower at 31mm.

These are differences between registered values, not a controlled comparison at the same size and measurement conditions. See the notes below the specs for weight conditions.

View Alphafly 3 specsCompare both models

Compare within the database

See where these specs sit in the overall distribution. You can also compare within the same category.

Comparison: All data (1,014 shoes)

Position map

This shoeregistered average

Weight x stack height

registered average: 266g / 34.4mm (757 shoes)

The scatter plot includes only shoes with both weight and stack height registered.

Spec distributions

This shoeregistered average

Weight

This shoe 188gregistered average 268g (930 shoes)

96g383g

Drop

This shoe 8mmregistered average 6.8mm (939 shoes)

0mm13.8mm

Stack height

This shoe 39mmregistered average 34.3mm (774 shoes)

6mm58mm

Items with missing numeric values are excluded. Sample sizes and measurement conditions vary between models; this distribution is not a performance ranking.