If you start around the northern exit, you can at least glide through the path and then turn right, then turn left to make your way towards the southern end of the map. This is easily done, granted you take into account the slow turning radius and the enemy spawns.
To get this trophy, you actually need to traverse in one continuous boost for half a minute. A Float Booster key item is given to you as part of the story scene when you enter that allows you to boost well beyond the second of coverage a normal boost covers, allowing you to traverse this large area with ease. An open field available to the two new routes for Advent Dark Force, Dasuhiro Plains, is where you will be able to get this trophy.
