User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-4452412-20140918113612/@comment-4009941-20140918153628

Dondruma is like the head of the guild. Its not a stretch for these characters to just take a boat or airship ride to come visit. And on top of that Yukumo is said to be in the area of the Heavenly Mountains so thats even less of a stretch.