The Mt Coot-tha official "Summit Track" only takes you to the lookout, which is some 50 odd metres lower than the highest point on the mountain. The true summit is fenced off as a QUU facility, immediately west of the Channel 10 studios. You can walk up to the fence from Sir Samuel Griffith Drive though, which is only a metre or two below the summit. I decided to take a more interesting loop using parts of the Simpson Falls Track, Eugenia Circuit, Brush Box Track, Grey Gums Track, Fairy Wren Circuit and Powerful Owl Trail.