Abstract: A trailer edge rail system for use with a trailer having a removable cover includes a mount having a first end adapted to be secured to an edge of the trailer. The mount also includes at least one protrusion extending generally upwardly and parallel to a face of the edge of the trailer. The protrusion acts as a guide and aids in preventing an object (such as a snowmobile or the like) from being loaded too close to or driven off the edge of the trailer. A lip extends generally outwardly and transverse to the protrusion. In the preferred embodiment, the first end includes a C-shaped bracket. Alternatively, the first end may be molded with the trailer. The edge-rail system also preferably includes a longitudinally disposed cavity sized and shaped to accept one or more wires, hoses, or lights.