If you're running the 2014 Berlin Marathon, you might be interested in this bird's eye video of the 2014 Berlin Marathon course.
I've used the official course map to put it together with the help of Mapmyrun. Select the "view 3d video" from the menu on the right hand side and take visual tour around the course in a matter of minutes. What a contrast that will be to the day itself!!
Here's the official course map: