In the early years of the twentieth century, Germany was the protagonist in the racing world with the two national houses: Mercedes and Auto Union. Despite this, it did not have a permanent track for racing. For this reason it was decided to build what, in the minds of its designers, it would have been the most difficult track in the world. The laying of the foundation stone was laid Sept. 27, 1925. The inauguration was held June 18, 1927. The path wound through the ups and downs of the hills between the towns of Adenau, Nürburg in the Eifel and Müllenbach.
The Nordschleife was characterized by curves 172 (of which 84 right and 88 left)  each of which differed for radius, angle and slope.
The Südschleife was instead located near the town of Müllenbach, and was used mainly for smaller races. Despite the shorter length, had the same characteristics of many "big sister", as significant elevation changes, challenging corners and a certain degree of danger. The two tracks share the two straights of the area called Start und Ziel Schleife (track of origin and destination, also called Betonschleife, cement ring), containing the box, and when used alone was 2.238 km long. For some endurance racing was used to track born from the union of two portions, 28.265 km long, called Gesamtstrecke. The first editions of the Grand Prix of Germany took place on the track complete, and from 1931 he was the favorite Nordschleife.
The 'Ring' (another nickname which is called this track, because in German the word means, of course, 'ring') was the scene of many pages of the history of motorsport before the second world war: the myths were born here Mercedes-Benz, Auto Union, and the others are consecrated, such as Tazio Nuvolari, who scored a resounding victory in 1935.
From the postwar period to 1976
After the war Südschleife was used less and less, and the words were referred Nürburgring Nordschleife now the sole. On this race is the Grand Prix of Germany from 1951 to 1976, with the sole exception of 1959 and 1970. In this year the track was deeply modernized, with the reconstruction of the roadway and the addition of guardrails along the way. These changes did not prevent Niki Lauda crashing into a rock wall in a fast bend (that fans call Lauda Linksknick, or curve to the left of Lauda) just before the curve Bergwerk. Since then the pilots got the race was moved Hockenheimring. It was the end of an era.
The new track
To return to host the top flight, it was decided to build a new track: the GP-Strecke, which would take the place of the old track in all competitions of the highest level. This was built on the site of the Südschleife there, which was almost totally demolished. The inauguration took place in 1984 with a race-only Mercedes, which was won by a young Brazilian: Ayrton Senna. Since then, the new track was the site of the Grand Prix of Luxembourg and the European Grand Prix. Important changes were made in 2002, with the construction of a new section immediately after the pit straight named "Mercedes Arena". Until 2009 the Nürburgring was no longer the seat of the German Grand Prix (except for 1985). The new track has hosted in the past also some editions of the motorcycle Grand Prix of Germany. Currently among the races in the motorcycle industry is home to the World Superbike Championship.
The Nordschleife today
The Nordschleife is still active to this day. At the level of official competitions, is used annually for the 24 Hours Nürburgring through the use of two fittings that connect it to the runway GP (of which exploits the box and the whole track apart from the portion of the Mercedes Arena), for a total of 25.378 km in length.
It is also accessible to the public (which has always been the prerogative from the foundation). For several years now, the track is being increasingly used by car manufacturers in and outside Europe, such as the test track to test and develop the prototypes of new car models to be launched later in the market and for promotional purposes. The Nordschleife available for testing of individuals and automobile has a configuration that Escude the part of the track by GP and the curve number 13 of input and output (for safety reasons), has a length of 20.600 kilometers, while the lap complete along the Nordschleife 20.832 km is only done in practice sessions behind closed doors or at sporting events.
The current course record of the circuit for cars homologated for road use and equipped with road tires belongs to the Radical SR8 LM with a time of 6:48 (on the way to 20.6 km), while the record for cars derived from the series but without road license belongs to the Pagani Zonda R with a time of 6:47:50 (obtained from 20.832 km on the track). The record of this circuit configuration is 20.832 kilometers of 6:11:13, set by the Porsche 956 driven by Stefan Bellof during the qualifying session of the 1000 km of Nürburgring in 1983.