San Francisco Marathon to bring estimated 27,000 runners to city

SAN FRANCISCO (KGO) -- On your mark, get set, go! Move your car before it gets towed.

Signs like this are posted all over San Francisco to clear the course for the 40th annual San Francisco Marathon. And this year, more runners than ever are expected to attend.

Watch the video in the player above for the full story.

For a full list of road closures and how the San Francisco Marathon will impact traffic, click here.