Also called NaNoWriMo, the National Novel Writing Month (which is in fact international) is a challenge to authors to write a complete 50,000 word novel starting at November 1st, 12:00am and the deadline sitting at November 3th 11:59 pm.

All genres of writing are welcome, INCLUDING fanfiction. The only rules are that you MUST start and finish within November, no starting early or finishing late; but you can plan the story as much as you want beforehand. There is no real '1st place winner' in this contest, if you make the 50,000 word limit you get the award. The judges don't read your story, all they do is run a word count on it, so it can technically be as badly written as you can possibly make it.

Click THIS LINK for the main website and more info.