Physically demanding mountainbike crossing of the Harz mountains with steep climbs, fast descents and plenty of vertical metres For warm-up, the route starts with small ascents and descents over Dietrichsberg-mountain and Polsterberg-mountain towards the Sösetal-valley. Along the water reservoire Söse-Talsperre, the route goes down the Sösetal-valley to the town of Osterode am Harz on the southern edge of the Harz. In Osterode the first long ascent begins with good percentages and leads from deciduous and mixed forests back to the spruce forests of the Oberharz. The Oberharz will bring more meters of altitude around the Innerstetal-valley near Wildemann and Lautenthal. Then it goes up to the highest peak of the day: The 726 meter high Bocksberg near Hahnenklee offers beautiful views to the Harz foreland. Down the mountain it goes now to the northern edge of the Harz to the city of Goslar. With views of the deep Okertal valley, there is a demanding last ascent before it goes downhill back to Schulenberg.