Thus, with Hockenheim (in odd-numbered years) and Solitude, two tracks in the southwestern state of Baden-Württemberg shared the German GP until the mid-1960s, when the Solitude was abandoned and replaced by the Nürburgring. There, the lesser known 7.7 km Südschleife was used twice, as in the Eifelrennen races which often attracted international entrants, but that part of the track was not rebuilt in 1970/71; thus in the even years from 1970 to 1980, the famous Nordschleife was used.
Thus, Hockenheim (in odd-numbered years) and Solitude shared the German GP until mid-1960s when Solitude was phased out and replaced by Nürburgring. There, the lesser-known 7.7 km Südschleife was used twice, as in Eifelrennen races that often drew international entrants; however, this part of the track wasn't rebuilt in 1970/71. From even-numbered years 1970 to 1980, the famous Nordschleife was utilized.