Something Greg taught me was to regularly overlay maps, so that you could see how things interact with stuff beyond the border of the map. This has a big effect on how I read history as well.
Anyways here’s how a bunch of my hand-drawn master maps look linked together. With the scale, you can see it just isn’t far from Boldhome to Nochet, and the Dead Place and the Block are visible from Boldhome.
Forgive any blurry lines, as these are all separate hand-drawn maps that Matt Ryan stitched together. Any errors are all mine, not his.
“and the Dead Place and the Block are visible from Boldhome.” this is why stitching together maps is such a useful exercise. Of course Sartar and Prax are closely linked. But if they are on separate maps it is hard to notice the obvious!
Visibility? Air diffusion, dust and water limit visibility. But you can get around that with Farsee, or some other magic.
Also from this it becomes very obvious that eastern Sartar is much drier than western Sartar, and that Sartar eases into Prax. The Dead Place, a poisonous alkaline flat among the most arid in Prax, is only about 40 km from Swenston.
Swenston is also the terminus of the caravan route between Dragon Pass and New Pavis. So imagine it filled with Praxians, their livestock, etc., with markets offloading and unloading goods.