A couple of entries from Europe:
La Sarenne in Alpe d’ Huez.
It’s claimed as the longest black run in Europe at 16km long but really it’s 1-2km of standard black run gradient skiing and the rest is mellow or flat cross country trail.
The Harikiri in Mayrhofen. “Austria’s steepest black run” which is a short 2km trail with a couple hundred metres plateau on top, 400m of 38degree pitch and then a rolling km and a bit to finish. Basically, make a few medium length turns on the steep section and as long as you can control and reduce your speed competently you can cruise the rest at speed.
La Face, Val D’Isere. It’s the resort downhill course so kinda short for Europe at 3km long, like the Harikiri one main steep section at 35degrees couple hundred metres long, it’s got a cheaters trail round it though and while there are other steepish sections they’ve got long flat run outs after so unless you’re skiing it like a downhill racer and conditions are decent it’s pretty tame.