Alphafly 4 vs Adios Pro 5 | Our Most Scientific Race Shoe Comparison Yet

In today's video, Alex compares the Nike Alphafly 4 and the adidas Adios Pro 5 using STRYD data, putting two of the most exciting race day shoes of 2026 head to head in a full ABBA test protocol at 16km/h to give you the most reliable comparison possible.

This is the first time Meta Endurance has run an ABBA test with STRYD, making it the most scientifically rigorous shoe comparison on the channel to date. Alex covers upper, midsole feel, and then dives into the data across power, cadence, heart rate, form power, vertical oscillation, ground contact time, leg spring stiffness, and impact loading rate to build a complete picture of how each shoe performs and who it is best suited for.

The headline findings: the Alphafly 4 is the bouncier, more explosive shoe built for forefoot strikers and shorter distances, with higher leg spring stiffness and more vertical oscillation. The Adios Pro 5 is the more efficient, more democratic option across foot strike types, better suited for marathon distance, heavier runners, and those needing stability. Neither shoe is universally better. The right choice depends entirely on who you are as a runner.

🔺 Links from this video ⬇️

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AFFILIATE LINKS

🇪🇺 Top4Running (discount code META)
top4running.com

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