Start at the beginning of the Centennial Trail, just past the front gates of the park. Follow the Centennial Trail in its entirety, which brings you to the visitor centre parking lot. From here, just head to the road and go all the way to the most southern point in all of Canada. The Tip! Go as far as you can without getting your feet wet, take a picture and then take the same way back to the start. About 20km, basically flat.