A Möbius

Möbius strip

The Möbius strip or Möbius band is a surface with only one side and only one boundary component. The Möbius strip has the mathematical property of being non-orientable. It can be realized as a ruled surface...

 loop roller coaster can be either a racing roller coaster

Racing roller coaster

A racing roller coaster, sometimes referred to as a dual track coaster, consists of one whole track or two separate coasters that travels along parallel or mirrored tracks to simulate a race between the trains. The coaster trains travel along tracks just a few feet apart of one another...

 or a dueling roller coaster

Dueling roller coaster

A dueling roller coaster features two roller coasters, usually with a similar layout, built close to each other. The rides are designed to do just as the name indicates: to duel...

. Its unique feature is that there is one continuous track instead of two separate ones. As a result, the station that a train leaves is not the same one to which it will return.

Only three of this type of roller coaster are still in operation today. They are the Grand National

Grand National (roller coaster)

The Grand National is a wooden roller coaster at Pleasure Beach, Blackpool. It was designed and constructed by Charles Paige in 1935 and is now one of only three surviving Möbius Loop roller coasters in the world and the only one in Eurasia. It is themed and named after the Grand National; with...

 at Pleasure Beach, Blackpool (Blackpool

Blackpool

Blackpool is a borough, seaside town, and unitary authority area of Lancashire, in North West England. It is situated along England's west coast by the Irish Sea, between the Ribble and Wyre estuaries, northwest of Preston, north of Liverpool, and northwest of Manchester...

, UK), Montaña Rusa

Montaña Rusa

Montaña Rusa is a roller coaster at La Feria Chapultepec Magico in Mexico City, Mexico. In 1993, it was renamed Serpiente de Fuego but later it was changed back to Montaña Rusa....

 at La Feria Chapultepec Magico

La Feria Chapultepec Mágico

La Feria Chapultepec Mágico is an amusement park in Mexico City, Mexico. Located in Chapultepec Park, it opened in 1964 as Juegos Mecánicos de Chapultepec and was operated by the Mexican government...

 (Mexico City

Mexico City

Mexico City is the Federal District , capital of Mexico and seat of the federal powers of the Mexican Union. It is a federal entity within Mexico which is not part of any one of the 31 Mexican states but belongs to the federation as a whole...

, Mexico

Mexico

The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

) and Racer

Racer (Kennywood)

The Racer is a wooden roller coaster located at Kennywood Park, in West Mifflin, Pennsylvania, near Pittsburgh. It is a racing, moebius loop coaster; one of only three in the world.-Beginnings:...

 at Kennywood Park (Pittsburgh, Pennsylvania

Pittsburgh, Pennsylvania

Pittsburgh is the second-largest city in the US Commonwealth of Pennsylvania and the county seat of Allegheny County. Regionally, it anchors the largest urban area of Appalachia and the Ohio River Valley, and nationally, it is the 22nd-largest urban area in the United States...

).

Racer is registered as a historic landmark.