← Running Shoe Index

Marathon racer

Nike Alphafly 3

The shoe most world records have been set in, and the first Alphafly that flows rather than clunks. Air units in the forefoot, ZoomX everywhere else.

RacedayR6 399Released January 2024
Nike Alphafly 3Nike
Category
Raceday
Stack height
40 / 32mm
Drop
8mm
Weight
198g
Plate
Carbon (Flyplate)
Midsole
ZoomX
Surface
Road
Best for
Marathon and half marathon race day
Price
R6 399

Two Air Zoom units sit under the forefoot, surrounded by ZoomX running heel to toe in two densities, firmer above the Flyplate and softer below it. The third version dropped the cutout that split the heel from the forefoot on the first two, which is why it rolls instead of tipping. 40/32mm of stack, an 8mm drop, and 198g in a men's US 9. Nike quotes 218g, but for a UK 9, which is a full size up.

2 layers

  1. Upper layer, firmer, under the foot

    ZoomX

    PEBA, polyether block amide

  2. Lower layer, softer

    ZoomX

    PEBA, polyether block amide

Plate
full-length carbon Flyplate, with two Air Zoom units in the forefoot
Energy return
74.9% heel, 73.9% forefootLab measured by RunRepeat

Both layers are ZoomX, the Pebax-based racing grade, tuned firmer above and softer below. ZoomX is a family of foams rather than one recipe, which is why the same name carries a different polymer elsewhere in this index.

Coming soon

We only give a shoe a verdict once we have run in it ourselves. The numbers above are the facts. The opinion lands when the miles are done.