Adidas Adizero Adios Pro 2 vs. Nike Air Zoom Alphafly Next (2021)

These carbon plate shoes have a stunning futuristic design with a cut-out sole design that creates a segmentation between the forefoot and the heel.

While we’re on the subject of the forefoot, note that the Alphafly features an Air Zoom unit which gives it more flexibility under the toes. Also, despite its seemingly massive design, it’s lighter than the Adios Pro 2.

In terms of ride, runners seem to agree that the Adios Pro 2 is more versatile and can be used at a slow pace, while the Alphafly appears to be made almost exclusively for competition.

Finally, both shoes have a thin mesh with not much structure that provides a soft and relatively loose foot lockdown.

Adios Pro or Alphafly: which one to choose?

It’s primarily a matter of personal preference. If your goal is to run fast and far, then the Alphafly seems a better choice.

If you want a carbon ‘super shoe’ that’s compatible with racing and your daily runs, we recommend the Adios Pro.

Finally, if you’re on a budget, you may not have any choice at all: the Alphafly costs $50 more than the Adios Pro!

Side-by-side comparison

Bottom Line
A very good carbon plated running shoe that offers a comfortable and versatile configuration for mid to long distances.
Great comfort
Cushioning is as effective and versatile as ever
Smooth transitions
Better fitting upper for a more targeted lockdown
Good durability for this type of shoe
Some testers note some stability and lockdown issues
A little heavier than its direct competitors (about 1 oz/30 g)
The Nike Air Zoom Alphafly NEXT% is a carbon plate competition shoe that elite athletes Eliud Kipchoge and Brigid Kosgei used to crush the world marathon records.
Effective and comfortable cushioning for competition
Precise foot lockdown
Good space even for wider feet
Above-average durability for a carbon shoe
The new ‘Nature’ version is more ecological with 50% recycled material (by weight)
Some runners note stability issues
The low heel-to-toe drop may not be suitable for everyone
Really expensive shoe

Adidas Adizero Adios Pro 2

Nike Air Zoom Alphafly NEXT%

Technical Specs

Pronation typeNeutralNeutral
Drop8 mm4 mm
Heel stack height39 mm40 mm
Forefoot stack height31 mm36 mm
Weight (men)227 g/8 oz210 g/7.4 oz
Weight (women)227 g/8 oz184 g/6.5 oz
AthletesPeres JepchirchirEliud Kipchoge, Brigid Kosgei
Release year20212020


OutsoleContinentalTextured rubber
MidsoleEnergy Rods, Lightstrike ProZoomX, carbon plate, Zoom Air
UpperCelermesh 2.0Atomknit


Softness (1-5)4 – Soft3 – Moderate
Bounce (1-5)5 – Very bouncy5 – Very bouncy


SpeedModerate, fastFast
Distance Mid, long, 10 km, half marathon, marathonMid, long, 10 km, half marathon, marathon
Kevin Le Gall

Kevin Le Gall

Kevin is the founder and editor of Runner's Lab. He started running in 2015 and completed his first marathon in Rotterdam in 2016. He's also worked for Under Armour from 2016 to 2018 and helped launch their running collection in Europe (in particular the HOVR shoes). In addition, Kevin is a 300-hour certified yoga teacher (Sivananda) and uses this experience to run more mindfully with a focus on well-being over performance.