Most table runners widths will range between 14 to 17 inches. The ideal table runner width for your table will ultimately depend on the size of the table you will be using. To easily determine the appropriate size needed, measure the width of your table and divide it by three. As a general rule, table runners should be at least 1/3 the width of your table. This will leave enough space on each side of your runner to display your table accents without having clashing table decor. For more modern table decor, opt for wider table runners like chiffon runners gathered to 1/3 the width of your table.