Going off <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Heaviest_trains" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Heaviest_trains</a> I&#x27;d reckon probably about 1000m length for 8600t trains.<p>(And also that 8600t isn&#x27;t anything special.)