As far as I'm aware. Shire Folk will probably try to challenge that with their KH crossover fic, but considering Shire Folk embodies purple prose and pointless padding, it won't exactly be worth reading.
Well, they aren't close yet. F:E is around 608k long if I remember correctly. I know "My Second Life" is getting pretty close. Right now it stands on 629,029 words total, but without any bonus chapters it's down to around 560k I believe.
