* Blade (Marvel Comics character): If you're asking about the fictional character, he's been around since 1973, so that's a long time!
* Blade (movie series): The first movie was released in 1998, and there were three sequels in the series.
* A specific movie or comic book story: Are you asking about the length of a particular story? If so, please specify which one.
Let me know what you mean and I can answer your question!