What makes the Flat Rock trail so tough? Extreme concentration is required when running Flat Rock, as you will take very few steps where there will not be some potential obstacle. Most of these will be in the form of rocks. You will very quickly learn why the race motto here at “the Rock” is “If you look up…you are going down!” Buyer beware please. While the trail does not have any long hills, there is an estimated total elevation gain and loss of approximately 3,000 feet for the 50K. Most of these hills are very steep and rocky and are not runable, unless you can run trails like a mountain goat, due to the treacherous footing. So, please remember to take your time and enjoy the scenary safely…while stopped, or moving slowly and cautiously.