| Regio-Ring | |
| Location: | Lahr, Baden-Württemberg, Germany |
| Time: | CET (UTC+1) CEST (DST) |
| Capacity: | 32,000 |
| Opened: | 1996 |
| Closed: | 1999 |
| Operator: | ADAC Südbaden (1996–1999) |
| Events: | Super Tourenwagen Cup (1997–1998) German Formula Three Championship (1997–1998) Porsche Carrera Cup Germany (1998) |
| Layout1: | Full Circuit (1998) |
| Surface: | Asphalt/Concrete |
| Length Km: | 3.240 |
| Length Mi: | 2.013 |
| Turns: | 10 |
| Record Time: | 1:08.901 |
| Record Driver: | Pierre Kaffer |
| Record Car: | Martini MK73 |
| Record Year: | 1998 |
| Record Class: | F3 |
| Layout2: | Full Circuit (1996–1997) |
| Surface2: | Asphalt/Concrete |
| Length Km2: | 3.352 |
| Length Mi2: | 2.083 |
| Turns2: | 10 |
| Record Time2: | 1:13.113 |
| Record Driver2: | Norman Simon |
| Record Car2: | Dallara 397 |
| Record Year2: | 1997 |
| Record Class2: | F3 |
Regio-Ring was a former airfield circuit located on the Lahr Airport in Lahr, Baden-Württemberg, Germany.[1] [2]
The circuit's original length was, it was shortened to in 1998, however it was closed in 1999 by the circuit operator ADAC Südbaden due to the expansion of Lahr Airport and impossibility of operating three-day race events.
The fastest official race lap records at the Regio-Ring are listed as:
| Category | Time | Driver | Vehicle | Event |
|---|---|---|---|---|
| Full Circuit: 3.240 km (1998)[3] | ||||
| 1:08.901[4] | 1998 Lahr German F3 round | |||
| 1:15.660[5] [6] | 1998 Lahr STW round | |||
| Full Circuit: 3.352 km (1996–1997)[7] | ||||
| 1:13.113[8] | 1997 Lahr German F3 round | |||
| 1:19.397[9] | 1997 Lahr STW round | |||