A long hallway, especially one that has rooms opening up into it, is called a corridor. Late at night, hotel corridors all look alike. Be sure you try to open the right door with your key card.
A corridor is also a tract of land that connects two places or runs along the side of a road. In your town, the business corridor might be a fairly small strip of land with just a couple of restaurants and a few stores. The Northeast Corridor is the built-up area that links eastern cities in a chain that stretches from Boston to Washington, D.C.