Route #2

Anti-clockwise: Wall Path (Mauerweg) - River Panke - Gesundbrunnen. I searched for a new route with Google Earth. I found out, that if I turned left at the northest point, there would be a river and a path along it.

GE says, that this path is 11,3 km, but Nike+ sensor measured it as 9,88 km. Hmmm...

There's also a variation to this track.