The Six Foot Track is a 45km footpath stretching across the Blue Mountains from The Explorers Marked Tree, near Katoomba to Jenolan Caves. The marathon started in 1984 and follows the length of the entire footpath. It is Australias 5th largest marathon and by far the largest 100% off-road running event. The race is a fundraiser for the Rural Fire Service & Six Foot Track Heritage Trust. It currently attracts over 850 entrants each year.