This type plane has a range of 2100 to 2400 miles, and the plane went missing about 140 km from Rostov where it was to land.
It's 1031 statute miles from Rostov to Athens.
All this from the thread about the planes, linked above. (From a couple of different posters.)
Thanks for the summary, I was going to jump in the thread... but I think I'd be lost in the shuffle at this point. ;)