Great question — answering as the UphillTech team:
I don't know what 'experts' you've heard, but trekking shoes that can't make at least 1000 km are a very low quality ones. The 'recommended' mileage for running shoes in popular apps is often as low as 600/700 km, but even cheap (but modest) running shoes like those from Decathlon cat do at least 1000 km. Trekking shoes have usually much harder soles, less optimal for running, but more durable. My best result on running shoes is 1800, but the soles were wear down almost completely, reducing their grip to the point where they could be used only on paved trails comfortably. However, I'm not buying top priced brands. On the top are the good brand heavy trekking shoes with good quality soles,...
Full answer by Cjxcz Odjcayrwl: https://outdoors.stackexchange.com/a/28987 (CC BY-SA 4.0).
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