Circuit Bremgarten, race track

Circuit Bremgarten was a 7.280 km motorsport race track in the Bremgartenwald north of Bern, Switzerland. It had no true main straight, instead being a collection of high-speed corners on tree-lined public roads. The circuit was built in 1931 for motorcycle racing and hosted its first automobile race in 1934. Only the northwestern curves Eymatt and Tenni and some forest sections remain paved and on the original layout.

Circuit Bremgarten opened in 1931 as a motorcycle road course on forest roads north of Bern, with no true straight and many high-speed corners. It held its first car race in 1934, when Hugh Hamilton was killed. The Swiss Grand Prix ran there from 1933 to 1954, as a Formula One world championship round from 1950, and the motorcycle world championship visited in 1949 and 1951–1954. After the 1955 Le Mans disaster Switzerland banned circuit racing, and the 21 August 1955 Swiss Grand Prix was cancelled.

The circuit's nickname, "Bremer", comes from the Bremgartenwald where it was laid out in 1931. The second Eymatt corner was renamed Tenni after Omobono Tenni died there in practice in 1948; Ercole Frigerio was killed at the same curve in 1952. A memorial stone in Bern-Brünnen commemorates the track.

The circuit sits inside a forest and can be reached on foot or by bicycle along the woodland paths. During events, arriving early is a good idea since parking close to the track is limited.

The 1954 Formula One lap record at Bremgarten was never beaten: when the Swiss ban followed, the fastest cars were still five seconds slower than the 1930s Silver Arrows mark set at the Nürburgring comparison. The circuit's last official motorsport event was in 1954, and the 1955 Swiss Grand Prix, set for 21 August, was cancelled.