It`s not official map but I guess it`s quite accurate
http://i73.photobucket.com/albums/i201/Vality7/TamrielMap.jpg
I'm not saying all non-Bethesda maps are nonsense, but the distance of Akavir is pretty much random. If I recall correctly, it was supposedly calculated based on the time it took the Imperial fleet to cross the ocean, divided by the average speed on an average sea of what the author believed might have been the average ship that Imperials might have used.
Of course, that theory does not take into account the historically underlit adaptation of the Redguard spinnaker for Imperial vessels, as was common during the second and third centuries of the Third Era. Seeing that the implementation of this new technology may have increased the Imperial fleet's speed tremendously, Akavir could be significantly further than expected.
My point is: it's more or less rubbish.