How We Test Running Shoes: The Fourteen Metrics
Every shoe goes through the same protocol: purchase at retail, 400km field cycle, fourteen lab measurements, then a teardown. Here is exactly what we record and why.
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When To Replace Running Shoes: What The Foam Actually Tells You
The 800km rule is a marketing number. Durometer drift and outsole loss give you a far better answer, and both are things you can check at home.