Probably more than a couple days, less than a week. Basically most things outside of Buckland are far enough that you'd need to Waystone during an event, but close enough to get there and back in a typical IBGA. Over the winter you could make the trip several times.
Last year we had a person basically travel the entire continent for the 4 month period, so from Westhaven to Arbor is a week at best if you are only walking.