The Six Foot Track Marathon follows the exact same path as the walking track from The Explorer’s Tree, Katoomba to Jenolan Caves. It is 45.0km. This is basically the same route as been followed since the days of the first european explorers to the area. http://www.sixfoot.com/history.php
The course varies from narrow, rocky track near the start in Nellies Glen, to meadows, sandy gravel track, and dirt fire-trail road – of course with a number of hills (big and small) and rivers (big and small).
I raced for the first time in 2011 and loved the area. The event is great fun with some stunning views, some fast and some technical trails, beautiful smelling gum tree forests and interesting wildlife. I finished first female in 3.52hr and 12th overall. The female record stands at 3.37hr by Emma Murray which I dont think is going any where for a while!