Nike React Infinity Run Flyknit 4

Nike React Infinity Run Flyknit 4 review: what runners say

Fit

Runs small: Nike itself recommends sizing up half a size. Narrow-footed runners can stay true to size; wide or high-volume feet may struggle with the low-volume toe box.

Feel

Rides soft and rockered, oriented toward easy paces. The React X foam is softer and more compliant than the previous version but returns little energy; the rocker aids transition without propelling.

Durability

Previous Infinity versions were known to exceed 400–600 km; the v4's full rubber waffle outsole suggests comparable or better longevity. No direct wear data yet on the v4.

Best for

Daily trainer for easy runs, long runs, and recovery. Also suitable for beginner runners seeking cushioning and a stable platform. Not appropriate for speed sessions or sustained tempos.

Weak points

High weight (over 340 g in men's mid-sizes) flagged by multiple sources as a structural limitation. Short sizing: nearly all testers had to go up half a size.

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