Marathons are mad, we say this time and time again. We find it hard enough to type all of these words, let alone run a steady pace for 26.2 miles. We’d struggle to stay still in a car for 26.2miles. But the mighty athletes are no ordinary folk, and they descend upon Kassel to test their will and stamina every September. This has a reputation for being one of the fastest marathons in Germany, which is a thing that we can’t quite get our heads around. Fastest marathon sounds like a contradiction.