Actually, my mistake, kinda. It takes the fastest trading vessels with favorable weather two months to get from Vylbrand to Doma. It's a bit of a throwaway line in the geography section of the lore book. The other distance mentioned is that it takes at least two weeks to get from Old Sharlayan to Vylbrand if the weather stays good. Slower vessels will obviously take longer.
None of that info makes it into the game as far as I can tell. I'm pretty sure the story team really isn't thinking about things like travel time though. It's hard to clue most people in to character development that could happen off-screen, so it's better to just let people RP whether it happens or not.
