Details: There was a special mode for a relay team at the Greifenseelauf. One person runs the whole half marathon and the second one joins for the second part. Since I knew that the second part together with my wife will be a little slower, I gave already full speed from the beginning on. I managed to have an average of under 4:20min for the first 11km, what is super fast for me. At the end we finished in a time of 1:52h, a lot faster than expected.