Hello Anja, something can not be right on the height profile! The big island mountain is 916 m high. According to the altitude profile of the tour but you have since allegedly a height of 1040 m above N.N. reached. The highest point of the Rennsteig is located between Schmücke and Oberhof around the 970 m over N.N.
Nevertheless, congratulations on the successful one-day ride on the Rennsteig. Respect!
August 12, 2019