To determine the total length of the race course, we need specific information about the triangle-shaped area, such as the lengths of its sides. However, since the information isn't provided in your message, I can't calculate the exact length.
If you have the side lengths of the triangle or any additional details regarding the layout, please provide that information, and I can help you calculate the total length of the race course. If you are choosing from the given options, the correct answer would depend on the total calculated length based on those side lengths.