Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
runner [ˈrʌnər] n (in race, person) бегу́н*ья) (:horse) скаку́н#; (on sledge, for drawer etc) по́лоз#; (carpet, in hall etc) доро́жка#
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.