The circuit Reims-Gueux was a motor racing circuit made up of rural public roads, located in Gueux, 8 km (5 miles) west of Reims in the Champagne region of north-eastern France, established in 1926 as the second venue of the Grand Prix de la Marne.

The circuit became known to be among the fastest of the era for its two long straights (approximately 2.2 km; 1¼ miles in length each) allowing maximum straight-line speed, resulting in many famous slipstream battles.

By then temporary grandstands were established fixtures at the Gueux / La Garenne and Thillois corners and after hosting the sixth round of the inaugural 1950 World Drivers' Championship, it became clear that the circuit needed further extensive renovations to comply with the accelerating Formula 1 technology.

There was to be a historic race held in 1997 but it was cancelled for technical reasons several months before it was due to take place and by 2002, the bulldozers arrived to demolish some portions of the track.

Today, the old RN31 straight between Muizon and Thillois is a wider dual carriageway, although it does follow the same line as the original two-lane road of the former circuit.

It is still possible to drive a lap around the (more or less) original 1926 version (through the center of Gueux) and the 1952 variant of the circuit, except for the old Garenne -junction which was demolished as part of the RN31 modernization.