In the real world Beorn once lived in the Elm hills, which is north of the Harz mountains in Lower Saxony, Germany.
https://en.wikipedia.org/wiki/Elm_(hills)
Radagast dwelt in Rhosgobel, near the Old Forest Road. Today this place is a small town named Radegast in Saxony-Anhalt., Germany
https://en.wikipedia.org/wiki/Radegast
Take a Tolkien Tour on the European Long Distance Paths and see it yourself.
