I'm not entirely sure what specific information you're looking for about "running man 20111211". This appears to be a reference to an episode of the Korean variety show "Running Man" that aired on December 11, 2011.

Without more context about what aspect of this episode you're interested in, I can provide some general information:

- "Running Man" is a popular South Korean variety show that has been running since 2010.

- The show features a cast of celebrities who participate in various games and missions.

- Episodes often have specific themes or locations.

- The date format (20111211) likely refers to December 11, 2011.

If you're looking for details about a particular challenge or event from this episode, or if you have a specific question about the show, please provide more information and I'll do my best to help you further.