der Korridor
corridor
A long, narrow hallway in a building, with doors leading off to different rooms.
Die Hotelzimmer befanden sich alle entlang eines langen Korridors.
The hotel rooms were all located along a long corridor.

corridor
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corridor
A long, narrow hallway in a building, with doors leading off to different rooms.
Die Hotelzimmer befanden sich alle entlang eines langen Korridors.
The hotel rooms were all located along a long corridor.

All meanings of 'Korridor' (corridor) share the basic idea of a long, narrow passage or strip that connects two points or areas. This idea applies to buildings, geography, and traffic.
Ein schmaler Korridor aus Bäumen führte zum See.
A narrow corridor of trees led to the lake.
For the hallway in a building, the prepositions are important. You are 'im Korridor' (in the corridor; dative, location), or you go 'durch den Korridor' (through the corridor) or 'den Korridor entlang' (along the corridor; accusative, movement).
Die Kinder dürfen im Korridor nicht rennen.
The children are not allowed to run in the corridor.
In traffic and security planning, 'Korridor' (corridor) is often used in fixed compounds. Especially common are 'der Luftkorridor' (air corridor) for airplanes and 'der Sicherheitskorridor' (safety corridor, or emergency lane) for emergency vehicles.
Bei einem Stau auf der Autobahn muss ein Korridor für die Rettungsdienste gebildet werden.
In a traffic jam on the highway, a corridor must be formed for the emergency services.
route / distance
'die Strecke' and 'der Korridor' can both have to do with a defined route or area. 'Strecke' usually means the distance or section between two points, for example on a road, railway line, or running route. 'Korridor' more often means a narrow space or area through which something is allowed or supposed to pass, for example an air corridor or a narrow strip of land. The words can be confused in transport and planning contexts because both can describe a route. The important point is: a 'Strecke' measures or describes the route itself. A 'Korridor' describes more the limited space in which that route lies.

Für die Flugzeuge wurde ein sicherer Korridor über dem Meer festgelegt.
A safe corridor over the sea was designated for the airplanes.
Die Strecke zwischen den beiden Dörfern ist im Winter oft schlecht befahrbar.
The route between the two villages is often difficult to drive on in winter.