Garmisch-Partenkirchen is two towns that were told to become one. Partenkirchen sits on the Roman road from the Brenner to Augsburg and is first mentioned in AD 15; Garmisch, west of the Partnach river, appears some 800 years later. They lived as rivals until 1 January 1935, when they were merged under heavy Nazi party pressure to host the 1936 Winter Olympics. Partenkirchen's residents are still said to mind when the whole place is called "Garmisch". What the merged town has is Germany's highest mountain, the Zugspitze at 2,962 m, and a ski tradition that includes a World Cup downhill, the Kandahar, and the New Year's ski jump of the Four Hills Tournament.
The skiing is modest by Alpine standards, and the guide says so. Garmisch-Classic has 40 km of runs, the Zugspitze plateau 20 km, and the two are separate. That is why five days works here and ten wouldn't: four of them are for skiing, with one day on the glacier plateau and three on the Classic mountains, and the fifth is for the town itself, where the painted houses, the Partnachklamm gorge and the 1936 stadium fill a day. It's an easy place to bring someone who doesn't ski all day.
The plan starts on a Monday, in any week outside the holidays. Days one to four are consecutive ski days, Monday to Thursday: the Hausberg and the Olympic ski jump, the Zugspitze, Alpspitz, then Kreuzeck and the Kandahar. Friday is the day off skis, in Partenkirchen. The weekday matters: weekends bring Munich day-trippers to the lifts and the Zugspitze, Museum Werdenfels is shut on Monday, the bakery on Sunday and Monday, and Gasthof Fraundorfer on Tuesday and Wednesday. A start on Monday 28 December puts the day off on the New Year's jump, but it's the most crowded week of the year. For the rest of Germany, 5 Days in Munich is 90 km away.