I'm not north, i checked out the map of the main supergrid (only supergrid mapped atm) and determined that the south-east was the least habited area. This turned out to be true, but it was still somewhat habited.
So i built a wagon and headed south for about, oh, 1 and a half hours or so. Ran past a mountain and some deserts and alot of boars, eventually found a river, sat down, built a boat, stuck my stuff on it and sailed along the river for about an hour or so, had to double back twice cause i hit dead ends, eventually it intersected with some grasslands, there's a heard of hairy horned cow\buffalo thingies here and some of every kind of tree, plus there's some heathland a short trip up the river if i feel like harvesting wind or something.
I did see a runestone and some signposts, but no other signs of habitation, the runestone named an area where some rivers met "Swastika Crossing' or something, i didn't stop to check out the signs. No signs of deforestation and no other signs of habitation for a loooong time.
Judging by the travel times involved, i'd estimate i'm about 1/4 or so of the way into the supergrid immediately south of the central supergrid, i was headed south-east, but the river went back to the west so i followed it.
I've started building a little home next to the aurochs with some fields and some logs piled up waiting ot turn into a log cabin, but it's getting late so it's time for me to sleep.
If you want to head down here, it's a fair hike, but i reckon it's worth it, i'm fairly sure there's no-one around for miles, certainly there was no-one around the river i took to get here, and rivers tend to be where people first build stuff.
There's a big clump of wild flax here too; handy.