Most table runners are approximately 36-108 inches long. Ideally a table runner should hang about 6 inches off each side but should never be longer than your tablecloth. For an 8ft table, your runner should be at least 108 inches long. This will allow the adequate 6" drop on each end of the table to perfectly exhibit the beautiful tablecloth underneath. However, your preference and style is best to determine the length of your table runner.