A system for transporting wind turbine blades includes a first support structure for supporting a cylindrical root section of a first wind turbine blade and a second support structure aligned with and spaced from the first support structure for supporting a tip section of the first wind turbine blade. A third support structure is included for supporting a tip section of a second wind turbine blade. A fourth support structure is spaced from and aligned with the third support structure for supporting a cylindrical root section of the second wind turbine blade. The first and second wind turbine blades extend with an edge-vertical orientation in opposing directions such that a tip of the first wind turbine blade is disposed horizontally adjacent the cylindrical root section of the second wind turbine blade and a tip of the second wind turbine blade is disposed horizontally adjacent the cylindrical root section of the first wind turbine blade.