After beating the game and then going back to use up all the CP, I saved and have checked that I have played for 90 hours.  That's possibly the 2nd longest I have spent on a game next to Oblivion (100 hours).

20+

Thusfar I've poured twenty-one hours into the game, having just reached the start of Chapter Eight. I expect I'll be sinking a lot more hours into it over the next couple of months.

70 and counting...

85 hours, almost platinum i got mission 64 left to do and the treasure hunter trophy

60+ still need to beat the rest of the missions
 
I might just do a newgame though..kind of miss the other areas

I'm on 115. I just finished all the missions. I'm currently going to either kill my first Long Gui (I don't know if I can do it though) or I'm going to go farm some more traps. 
 
@luce said:

" 60+ still need to beat the rest of the missions  I might just do a newgame though..kind of miss the other areas "

I just beat it at 55 hrs. I think I'm gonna give it some time before I go back and do more missions, though. I looked online to see what the hidden trophies were and it seems I'm probably going to have to double my play time to even come close to getting them.  

about 48 hours between my two copies. I sadly haven't had a ton of time to play since I got back from spring break but I almost to chapter 11 on my 360 copy so I am sure once I get there I will be going achievement crazy.

Holy shit. I feel like i havent played enough if some of you are on 100+ hours!! :S
 
I'm only on 23!

I got it two days ago. I'm on hour 11. Start of chapter....6?

Got it 3 days ago, 4 hours 53 mins in.

14 hours or so, I always take my time on RPGs. Sometimes I'll go entire weeks without coming back to them.

38 in Chapter 11

90+ i'm done for now. can't be asked with all the trap farming.

Eight so far. Still only on chapter 5.

0

40 hours at the start of Chapter 12

12 hours I think. Beat some guys with Snow in polumpalum or whatever the town is called.  I'll probably continue some time in the far flung future, I'm just not having fun :/

45

Like 35? I'd have to look but it's around there.

30 hrs, probably at the end of Chapter 9. not sure though but i am on chapter 9.

" Holy shit. I feel like i havent played enough if some of you are on 100+ hours!! :S  I'm only on 23! "

15, I think. I'm about halfway through Chapter 7, which I'm going to finish up tonight.

8 and a bit i think.... and i am somewhere in chapter 5 

39. Just at the end of chapter 11. 
 
Considering not bothering with it any more...

Just under 50, and I've just moved on from the portals towards the end.

I'm watching the ending cutscenes now...  clocked in around 50...
 
I can't see myself going back for along time...  Pretty unrewarding game if you ask me...  Took until the very end to make me care about the characters....   What a bad story.

About 16 hours in...I keep getting killed by the current boss battle I'm at.

14 hours.

Hey, leave some CP for me!

Beat the game in barely under 40hr, I only did 1 mission in the "Calm Land".  Will definitely go back to riding some Chocobo.
seriously don't know how Brad spend 20+hrs on Chapter 11 without doing the optional stuffs.

35 incredibly long hours.

0, I still have the game in sinkwrap and I need to start it.

56 hours, too much grinding trying to max out the default powers of my characters.

I'm only 15 hours in and i absolutely love it.  I was really skeptical going in but so far it has been amazing.  I believe I am at the end of Chapter 7 or maybe the beginning of Chapter 8. 

About 40. I'm in chapter 12 and I want to finish it, but the same time don't because I don't want it to end.

7.6 hours. Waiting for my girlfriend to head to her home town for a few days so i can put some real hours into it :D

I clocked 19 hours in the past three days.  I just started Chapter 9 (sort of...), so yeah. 
 
Hopefully, I'll be able to finish out the rest of the story within the week, and then...it'll be a while before I get everything else done.

44 : 32 here.
I'm at the beginning of 9.

Just finished treasure hunter tonight with the game clock at 101 hours.  My first Platinum trophy.  I think I'm going to go crawl into a fetal ball!  
 
I obviously played it so intensely since launch day because I enjoyed it, but damn...  I feel like a junkie who's lucky enough to realize "You know, I've had enough heroin.  Totally done with it!"

20 hours.
 
I feel the lack of motivation to play. Besides, I've been goddamn busy lately.

23 hours now, on Chapter 10. I can't wait until I get to the side mission stuff.

23 hours right before Hecatoncheir. (aka Chapter 11)

92 hours and a few mark missions to go, plus I still have to max out 2 more roles for everyone.

farming CP on fighting Behemoth and other thing post-game, about 70 hours currently

5 minutes! And how boring it was...