Runner rugs are designed to fit into small, narrow spaces like hallways and stairs. Because runner rugs are usually placed in close proximity to doorways, the correct pile height is crucial. A rug with a high pile may prevent a door from opening, while a flatweave rug may require a rug pad to stay centered in the space.
A runner should span the entire space, so be sure to measure before purchasing for a well-designed look. Many designers use multiple runners in a space to give the design room to breathe and avoid a potentially expensive custom-made rug.