I’ve done about two thirds of the 54 hikes in Burghardt’s guide by now and loved all of them. The walks range from 1.30 hrs to 7.30 hrs (generous estimates!) but most range between 3 to 4 hrs. Almost all starting and end points are accessible by public transport. Since the countryside around Munich is rather flat, the walks don’t require high levels of fitness. Often you meander through sparsely populated parts of the city, are surrounded by greenery but can still hear the hum of the city which is never far away. The tours are great, because you get to know Munich better while getting away from the hubbub. Because of the unusually warm weather, you can already find plenty of cafés with seating outside now.
Each description of a hike is accompanied by a small map, which might be enough, but some German would be useful so you can follow the instructions. Burghardt likes to guide you along small, winding paths which often make up the most beautiful and interesting part of the hikes. His descriptions are succinct and precise and without them you might find it difficult to find your way.
A similar guide is available for Augsburg, Rund um Augsburg by Karin Schön. In general Schön’s hikes tend to be shorter than Burghardt’s but she includes a three day tour which might be nice for a short break. Schön’s guide includes two hikes close to Munich (Ammersee).
If you prefer descriptions in English, there are at least two English sites offering information on hikes in the area:
7 hikes from Munich
Hiking-buddies.com
Apparently the only hiking guide available in English right now is Walking in the Bavarian Alps. If you know of any other guides or another website focussing on walks in the area, please let me know!