Could you give a better idea of what you have read? Like, if you've read all of last year's DCBB, no one will bug you with stuff from there.

To be honest I'm not actually sure. I've actually trawled through the masterposts a few times but the sheer number every year gets a little overwhelming, and I know I occasionally run into fic I like, which turn out to be from a big bang. I don't mind whatever you recommend; if you happen to mention a fic I've read before but forgotten, I'll appreciate it heaps anyway. Sorry for the trouble!

Uh, well, if you want long, my DCBB from last year (http://archiveofourown.org/works/981795) is nearly 80 thousand words?

Ooh, awesome. Thank you! I look forward to reading it!

I have a fic rec here that's of extraordinary Destiel fics (IMHO). 99% of them are long fics, and 99% of them AU.

Astrozoot's Completely Subjective Fic Rec List (http://astrozoot.livejournal.com/1692.html)

I can highly recommend:
And This Is Enough (http://cz-graphics.livejournal.com/9315.html) (bottom!Cas) The life of Castiel Novak, 27, animator, is kind of boring, his only highlight the sleepless nights when he's working on the animation of his celebrity crush, actor and heartthrob Dean Winchester. He starts reconsidering the monotony of his life, when he actually meets the charming man in person and they start an affair, despite Dean already being engaged...

Have Love, Will Travel (http://squeemonster.livejournal.com/54605.html) (bottom!Cas) Castiel Novak is a reclusive writer with a childhood so tragic it's left him terrified to leave his home—until his overbearing brother, Gabriel, drags him out for a night on the town full of booze and strip clubs, and he encounters Dean Winchester, a mesmerizing and mysterious stripper with secrets of his own. Both men find themselves inexplicably drawn to each other, and soon Dean's private dances for Castiel become much more, as both men confess their troubles and find solace in each other's company. But neither can seem to find the courage to take their relationship further than the intimacy of the club's VIP Room—and just when Dean's own brother gives him the excuse he needs to finally admit his feelings, Dean discovers something that brings it all crumbling down. Will they find a way past their demons and their trust issues, and back to each other?

Play It All Night Long (http://janie-tangerine.livejournal.com/290160.html) (can't remember who bottoms, but I would guess Cas does by the storyline) The rom-com-ish one where Dean hosts a late night radio show, Castiel is a regular listener of his who starts calling one day and ends up calling more often than not and Dean finds himself liking it. This, until one day Castiel calls for not exactly petty reasons (just before Dean's brother Sam is visiting with his girlfriend for spring break) and things get very, very crowdy at his place. He also doesn't know it's just the beginning of it. Also features Gabriel, Chuck, Andy, the Roadhouse crew and a huge amount of music quoted. Especially Bob Dylan.

Waves (http://archiveofourown.org/works/292406/chapters/467759) (bottom!Cas... I think) Dean Winchester is the average guy: football, college, kid brother, nice car, girls and beer; his life is black and white, that is until he meets Castiel Collins: pretentious, slutty, sweater-wearing genius, who won't even take the time to look up at him from his obscure novel while he insults him. And then everything is shades of gray and Dean is drowning.

A WHOLE FIC REC LIST. And more. You're spoiling me, thank you so much! :D Can't wait to get reading!

Here are my favorite long stories, lengths vary, but all are 30k+

Entertaining Angelsl (http://maychorian.livejournal.com/75260.html) Gen A strange boy shows up at Dean and Sam's motel room. Maybe he needs help, or maybe he's there to help them—they can't quite tell. Spoilers through 4.10.

Rain Falling Down (Plus Coming Down on a Sunny Day) (http://maychorian.livejournal.com/136067.html) Gen Castiel goes back in time to stop the Apocalypse. Things go wrong. Things go VERY wrong.

Sound of Something Good (http://archiveofourown.org/works/344513/chapters/559018) Castiel is fighting a war and his seven children are a weakness. So he hires a human bodyguard for them in the hopes that his supernatural enemies won't notice just how inhuman they are. Dean Winchester isn't excited about protecting monsters, but his brother wants him to do something respectable for a while and they're only kids. How ridiculous could it be?

And The Sequel: Ringing Like a Bell (http://archiveofourown.org/works/1103337?view_adult=true) Dean doesn't mind playing house with an angel of God, but sometimes he wonders what Castiel gets out of it. Between the kids, the holidays, and the powers no one is sure he's supposed to have, Dean has plenty of other things to worry about. But none of it seems quite as important as what he's doing with Cas.

I Got Soul by I'm Not a Soldier (http://archiveofourown.org/works/137551/chapters/197455) AU: Castiel is on the road (saving people, helping things) when he meets Dean and realizes that his soul is different - and not just because he's the pastor's son.

http://archiveofourown.org/works/503793/chapters/885401 (http://archiveofourown.org/works/503793/chapters/885401)
In the middle of the barren monster-ridden marches, there is a wall. Encircled by the wall and all its ancient protective symbols there is a small town: a few farms, a few orchards, a few herds of cattle and sheep, a few hundred humans who know that nothing outside the wall is anything but an enemy. The second-worst of the monsters that inhabit their lands are the demons; the very worst are also the most newly arrived, and they are the angels. Dean and Sam Winchester have buried the memories of the silent boy with blue eyes and black wings whom Dean had used to play with as a child, down by the wall, years before any other human ever saw an angel. But when one of the regular travelling pedlars turns out to be hiding wings; when Dean encounters a face he'd stubbornly forgotten for years sneaking into their village at night; when Sam gets hit by a curse that takes his human form away, and Bobby sustains an injury that makes him (by his own rules) less than human, and the behaviour of some humans begins to reveal a darker side, Dean isn’t the only one who will have to struggle to redefine the boundaries between humanity and monstrosity.

Kiss You When It's Dangerous (http://archiveofourown.org/works/561727)When his partner Uriel, betrays him, Federal Agent Castiel Novak is saved from becoming a ritual sacrifice by brothers Dean and Sam Winchester. Discovering the world of the supernatural and learning about werewolves, wendigoes, vampires and things that go bump in the night also leads to learning more about Dean and the strange life he and his brother lead. The more he learns, the more Castiel finds himself drawn into Dean’s world and toward Dean himself.

Whoa, awesome! Thanks for the recs! These all sound sooo good.
I've actually read Kiss You When It's Dangerous a little while ago and it was fantastic. You have nice taste ;)

Small Town Charmer (http://archiveofourown.org/works/992329/chapters/1960577) By ten a.m. Dean had seen his dream of expanding the hardware store dashed. By one, his baby had been impounded off the street. And by midnight, Dean’s personal space had been invaded by an angry, wet bookseller with hot blue eyes and an armful of natty first editions. There was also a cat. Maybe we should start at the beginning...

The Request (http://archiveofourown.org/works/311184/chapters/498373) When Sam Winchester prays for his brother, Castiel is finally sent on his very first assignment. But what should be a simple love match turns into much more and Castiel finds himself risking everything to ensure the happiness of his extremely frustrating charge.

Tripping (http://archiveofourown.org/series/30616) That time the universe decided Dean belonged with Cas and wasn't afraid to pull out the big guns to make it so. Big guns in this case being obsessive fangirls, archangels turned tricksters and overly enthusiastic cupids. Welcome to Dean's life.

Hard Road (https://www.fanfiction.net/s/6958847/1/Hard-Road) Dean discovers a few truths about himself when he and Cas are forced to go undercover on a hunt to the very last place Dean ever thought he'd find himself: a gay resort, called "Last Hope", geared towards failing homosexual relationships.

Thank you so much! I finished Small Town Charmer yesterday and it's really the sweetest fic. <3 I'm getting started on the others on Monday.

Don't know if you're still looking, but every time I see a destiel rec request I just have to mention otp_destiel (http://otp-destiel.livejournal.com/)fics. If you're a big destiel fan you've probably already read them but if not I rec them all.

If you're looking for epic long stories Unexpected destinies (http://otp-destiel.livejournal.com/571.html)is amazing and at last count had 200 chapters and I have no idea what the current word count is.

Hope that helps.

Whoa, I don't know how but I don't think I've ever read any of their fics! Obviously my google-fu sucks more than I thought.
Thanks for the recs <33