We stayed over the night in the Knorrhut. Next day, Monday, we stand up early and started at 6.30 am to hike up the last meters. We had still nearly 900m to climb up. And the distance was not too far. Means the way was quit steep. But the nice weather made the ascent really comfortable. After 1 hour you can see the trash of civilisation on the top of the mountain.

There was still some snow around:

But I was informed that for the time of the year it is not much. In the background the cables of the cable car going up from the skifield to the top are visible. This is the only one we used (on the way down to safe some time).
On the way up we decided to do it on foot. The last part of the ascent is quit exhausting but I think it is worth.

On the top after we conquered the summit a real good Weisswurst breakfast was waiting for us. As well we had again the compulsory Radlermass. It was a real nice breakfast and the people up there in the DAV hut are quit funny. There was a US women asking for the safest ride down the mountain (haha). It is always funny to hear a real Bavarian trying to speak English. As well it is always nice to see Americans worried about their safety ;-) We thought it would be a fitting answer to say, that no US jetfighter is nearby and so it is quit safe to use the cable car. But maybe it would have been too sarcastic.
Finally we know now that the way from Garmisch up to the Zugspitze and back is 4 Radlermass long ;-)