Here are my recs for long pinto fics ( above 20,000 words). I read a lot and these are the stories which really moved me or are really really hot. Hope you like them.

1-Couture by demonllama1
This is the kind of fic where you want to yell "why why why can't you both just figure it out?" Also, seriously hot.

2-You Spin Me Right Round by SuedeScripture
Shy Chris. Enough said.

3-Amongst Your Hounds of Loving' by rainbowstrlght
Perfect combination of sweet and hotness!!  You would want to kill the person who distrubs you while you are reading it, especially the ending. It is one of my fav pinto fics.

4-Jumping into the Middlle series by AtotheBean
Seriously hot!

5-the waiting that happens in the space between by Saramir
 Pinto Banter. Sleepy discussions about literature. What else could you want? The sort of fic you want to read a second time.