SketchCrawl is a global drawing marathon that takes place in communities all around the world. It's an opportunity to meet other artists and sketch the city. It was started in 2004 by Enrico Casarosa, Director at Pixar Animation Studios. Learn more here: https://goo.gl/rK4Unv
This local group is informally associated. It's organized by Nick Sung, a former Pixar Story Artist.