Yeah, I've just run across a passage from TJE, wherein the distance from Sakarpus to Golgotterath is mentioned as being over 2000 miles. Based on the maps from the books, Swaranul/Irsulor are about half the distance from Sakarpus to Golgotterath. For arguments sake, let's say that's roughly 1000 miles.
The GO was in Sakarpus in Early Spring, and by the time they hit Irsulor, it is Summer. Because we have no Earwan calendar to go on, a day-is-a-week-is-a-month-is-a-season-is-a-year as we (the reader) can relate to them. Scott uses terms like Early Spring, Late Autumn, etc. So we can break time increments down to:
Early Winter, Winter, Late Winter, Early Spring, Spring, Late Spring, Early Summer, Summer, Late Summer, Early Autumn, Autumn, and Late Autumn. That gives us 12 designations for relative time-keeping. So we have Early Spring, Spring, Late Spring, Early Summer, Summer (5 time increments) for the travel time between Sakarpus and Irsulor. Again, we don't know how long an Earwan year is, so this next part is all conjecture. Just say, again for arguments sake, that each of the 12 designations is 30 days. 30 days x 5 increments = 150 days from Sakarpus to Irsulor (1000 miles), giving an average of 6.66 miles traveled every day. That's probably fairly accurate as an average for an army of that size. Some days there was no travel at all, battles, whatever, whereas other days they probably were able to go farther than that. If the days are shortened to 25 per designation, that's 25 days x 5 increments = 125 days, averaging 8 miles per day, which also sounds reasonable. There are obviously many other factors here, but all we can do is spitball it.
At that scale (1000 miles from Sakarpus to Irsulor), the distance from Aoknyssus to Attrempus is closer to 300 miles, which is a pretty heavy discrepancy, as well. So, not sure what to do in terms of adding a scale to the map, tbh.
EDIT: This brings up another subject. If it took the Great Ordeal 2 books to get half the way to Golgotterath, how the hell are they gonna make it there by the end of TUC??