They may look fine but it's the cushioning that goes and that'll contribute to injuries.
It will depend many things including how heavy a runner you are; a gentle forefoot strike is going to be different to a thumping heal striker.
Somewhere between 500-800km will cover most people/trainers.
I set the Strava warnings to 600km for mine, but then I'm a fat git.
@Greenbank started
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They may look fine but it's the cushioning that goes and that'll contribute to injuries.
It will depend many things including how heavy a runner you are; a gentle forefoot strike is going to be different to a thumping heal striker.
Somewhere between 500-800km will cover most people/trainers.
I set the Strava warnings to 600km for mine, but then I'm a fat git.