Diepholz Airfield Circuit

The Diepholz Airfield Circuit was an auto racing circuit in the south-west of Diepholz, Germany. It was a temporary circuit on a military airfield, which is still in use by the German military today.

Diepholz Airfield Circuit

Full Circuit (1992–1996)
Location	Diepholz, Germany
Coordinates	52°35′08″N 8°20′28″E
Opened	21 July 1968; 57 years ago (1968-07-21)
Closed	23 August 1998; 26 years ago (1998-08-23)
Major events	Formula König (1997–1998) Formula Renault 2.0 Germany (1997–1998) Porsche Carrera Cup Germany (1990, 1992–1998) DTM (1985, 1987, 1989–1996) Supercup (1987–1989) German F3 (1971, 1977–1983, 1985, 1989–1996) Deutsche Rennsport Meisterschaft (1972–1977, 1979–1980, 1983–1984)
Full Circuit (1992–1996)
Length	2.720 km (1.690 miles)
Turns	12
Race lap record	0:57.735 ( Alexander Wurz, Opel Calibra V6 4x4, 1996, Class 1)
Full Circuit (1991)
Length	2.690 km (1.672 miles)
Turns	9
Race lap record	0:56.070 ( Marco Werner, Ralt RT35, 1991, F3)
Full Circuit (1989–1990)
Length	2.690 km (1.672 miles)
Turns	10
Race lap record	0:51.760 ( Martin Donnelly, Nissan R89C, 1989, Group C)
Full Circuit (1977–1988)
Length	2.600 km (1.616 miles)
Turns	14
Race lap record	0:48.150 ( Hans-Joachim Stuck, Porsche 962C, 1987, Group C)
Full Circuit (1968–1976)
Length	2.600 km (1.616 miles)
Turns	10
Race lap record	0:56.590 ( Hans-Joachim Stuck, BMW 3.0 CSL, 1973, Group 2)

The full length of the runway was used as part of the circuit, with a fast double chicane and a straight start/finish, which included a temporary pit lane going down one side of the runway. There were no pit garages or permanent racing-related buildings on site. Racing occurred at Diepholz in 1968 due to a lack of permanent circuits in Germany. Used mainly for Touring car racing, Diepholz was a regular venue on the calendar for the DTM series. When the DTM, then known as the FIA International Touring Car Championship, collapsed at the end of 1996, the circuit had little use. In 1997 and 1998, the circuit hosted races for Formula König, Formula Renault 2.0 Germany, and Porsche Carrera Cup Germany. Since then, the circuit has not hosted any races.

The circuit was similar to those at Burke Lakefront Airport and Edmonton City Centre Airport.

Lap records

The fastest official race lap records at the Diepholz Airfield Circuit are listed as:

Category	Time	Driver	Vehicle	Event
Full Circuit: 2.720 km (1992–1996)[1][2]
Class 1 Touring Cars	0:57.735[3]	Alexander Wurz	Opel Calibra V6 4x4	1996 Diepholz ITC round
Formula 3	0:58.333[4]	Emmanuel Clérico	Dallara 395	1996 Diepholz German F3 round
Full Circuit: 2.690 km (1991)[1][5]
Formula 3	0:56.070[6]	Marco Werner	Ralt RT35	1991 Diepholz German F3 round
Group A	0:59.600[7]	Klaus Ludwig	Mercedes 190E 2.5-16 Evo2	1991 Diepholz DTM round
Full Circuit: 2.690 km (1989–1990)[1][8]
Group C	0:51.760[9]	Martin Donnelly	Nissan R89C	1989 Diepholz Supercup round
Formula 3	0:55.070[10]	Michael Bartels	Reynard 893	1989 Diepholz German F3 round
Group C2	0:55.420[9]	Philippe de Henning [fr]	Spice SE87C	1989 Diepholz Supercup round
Group A	1:01.600[11]	Gianfranco Brancatelli	Ford Sierra RS500 Cosworth	1989 Diepholz DTM round
Full Circuit: 2.600 km (1977–1988)[1][12]
Group C	0:48.150[13]	Hans-Joachim Stuck	Porsche 962C	1987 Diepholz Supercup round
Group 5	0:53.080[14]	Manfred Winkelhock	Porsche 935J	1980 Diepholz DRM round
Formula 3	0:53.800[15]	Volker Weidler	Martini MK45	1985 Diepholz German F3 round
Group B	0:56.870[16]	Harald Grohs	BMW M1	1983 Diepholz Rennsport Trophäe round
Group A	0:59.190[17]	Manuel Reuter	Ford Sierra RS500 Cosworth	1987 Diepholz DTM round
Group 4	1:02.700[18]	Hans Heyer	Ford Escort RS	1977 Diepholz DRM round
Full Circuit: 2.600 km (1967–1976)[1][19]
Group 2	0:56.590[20]	Hans-Joachim Stuck	BMW 3.0 CSL	1973 Diepholz DRM round
Group 4	0:58.800[21]	Toine Hezemans	Porsche 934	1976 Diepholz DRM round
Formula 3	1:02.000[22]	Carlo Breidenstein	Brabham BT21	1971 Diepholz German F3 round