The invention relates to a crash barrier run (1) along a roadway, comprising a rail (2) which extends substantially parallel to the roadway and is composed of round timber sections (5) which adjoin one another at their ends. The round timber sections (5) are detachably fastened at their ends, via interposed spacers (3), to posts (4) which are anchored alongside the roadway. Each round timber section (5) is provided on its lower side (6) with a vertical groove (7). A metal strip (8) is arranged in the groove (7). The metal strips (8), which follow one another in the rail, are coupled by means of locking plates (14). The locking plates according to the invention have a U-shaped configuration and comprise two legs which are interconnected by a web. The locking plates (14) engage over ends (43, 44) of two adjacent metal strips (8), the ends (43, 44) being accommodated between the legs.