No I'l take a look there.
There's some threads over on DF about putting it in GH. I think I even started one at one point. You'll have to search.
I'd do the following:
Start the players in Northwick, in the Principality of Ulek. There are two rivers which meet there, which is similar to Kelvin in B10.
The players will travel east along the river, then south along a tributary (which you would need to create) to Sukiskyn.
The area north of the road to Eastpass would be analogous to the hills which contain the Gold Mine, Xitaqa, and events in Chapter 3.
I would place Rifllian further west of Northwick, near joining of the Old River and the river flowing out of Northwick.
Eventually, the players would follow the Old River north. I would place Threshold, and the corresponding Lake Windrush, up that river a bit. Very "frontier town" feel there.
There's no "perfect" place for it, but I feel like this location is good enough where you wouldn't have to massage the maps too much to make it fit.
For reference, the map of Ulek I am looking at is here:
ghmaps.net/wordpress/wp-content/uploads/2014/02/Ulek-Principality.jpgI've also done an overlay, to scale, of The Map of the Karameikos from B10 onto that map. It's not perfect, like I said, but it gives you an idea of what it would be like.
Warning...this would be a spoiler for players!