Abstract: Offset racing rail arrangements (16) of the fixed and relocatable variety are made safer by fitment of a cover designed to prevent riders from falling between and sometimes onto the poles which support the racing rail. A cover (22) is provided which is releasably attachable to a receptacle portion of the rail which is also resiliently spaced by a support means from the posts (10) which support the rail. The cover (22) is one embodiment comprises sheet material (24) bent (30, 32, 34, 36 and 38) underneath itself in such a manner as to provide a resilient self supporting spacing from each posts (10). The cover (22) is also in the embodiment provided with an edge portion (26) adapted to releasbly attach to a receptacle portion (56) of the rail without the use of fasteners.