I didn't finish :/ I only got about 33K but I think the whole story will be around 50K, more or less. This was my first Nano, and I loved the challenge! I knew where the story was going and how it was going to get there, but it was so cool seeing this world evolve around my characters, whole families and races popping up out of absolutely nowhere but making the story so much richer. Next year I might go with the YWP so I can keep my goal reasonable. Nano doesn't work well with school and disagreeable parents.
I managed the 50 k. Whether I "finished" a story or not is a matter of opinion. Technically, I finished one prologue and one story, and finished plotting another story... but my NaNo this year was a collection of loosely related plot bunnies (they were meant to be standalone, with scenes that merely suggest connections...though the prologue applies to the entire group), and I didn't finish the collection.
Oddly enough, I finished plotting out that one story, in spite of my nephew interrupting to ask if he can watch Doctor Who (about ten minutes before we had to eat dinner and then leave for Cub Scouts ) about the same moment I validated my word count. That was the last thing I've done, NaNo-wise. The next day I began carving up those plot bunnies and sorting them into their respective stories and files.
I had to go to bed soon after cub scouts, but not from a NaNo induced coma. I had to get up early to meet a student. Yay, job! Now if I could just get more hours.
Finished on 11/26 with 50,376 according to NaNoSite verification. More words than I had last year and earlier finishing time. I don't know how I was able to do this since I had more going on in my life. I've got three people reading through for me. No exhaustion. A day of over 5K and a day of over 4K. Both felt good. I was running low at the 5K day.