The trails are mostly well-travelled logging/fire-roads, although at some points they turn into two-tracks. At some points near the summit of the ridge (488.1 m!) there are singletrack opportunites. These are generally very fast, short, and pebble-y, so be careful.
Also, near the 5, are two castle ruins, Hirschberg and another, smaller ruins. The small ruins have been blasted, and are unrecognizable except for a few small stone foundations. Hirschberg is slightly better, with the remains of a large toppled stone tower resting on it's large mound.
The scenery up in the Odenwald offers large, panoramic views of the Rhine Valley over Mannheim. On a clear day, you can see over 40 km to the Pfalz mountains.