From the Forbes State Forest brochure:

Pine Knob Trail—Just 2 miles long, stretching from the picnic area to Pine Knob overlook. Parallels Lick Run for parts of its length. The elevation changes about 700 feet from its lowest point of 1,440 feet above sea level at the picnic area, to about 2,130 feet at the Pine Knob Overlook. Be prepared for a 4 hour roundtrip. Pack plenty of liquids during summer and warm clothes in the winter.

Start at the hiking car park in Halblech. Ascent to the Hoher Trauchberg. First to the Sennalpe, then past the Hochrieskopf to the Wolfskopf (1526 m). Continue on the Lower Bleick (1580m). The Hohe Bleick (1638m) as a summit is of course taken along. Back to the Lower Bleick. On the descent, don't forget the short detour to the Hochwildfeuerberg (1545m). Then down into the valley to the Halbammer. The forest path leads to the middle back and ends at about 1300m.

The route runs along the Ice Age Trail in the Northern Kettle Moraine Forest starting at HWY P in Glenbeulah and ending at HWY 45 in Kewaskum. The route is roughly 33 miles long. 

33.37 miles; 2,233' elevation gain

Google Maps: https://drive.google.com/open?id=109ijME5yO2xWs4luHVHJuUwFwcvM29qH&usp=sharing

ENGLISH:

The Fulda Cycle Path is 247 kilometers from the Fulda Spring on the 950 m high Wasserkuppe in the Rhöne to the merger of Fulda and Werra in Hann. It is divided into five stages, which are listed here as Variations.