The 20km is for the fit and adventure seeking runners. Heading out along single track, runners are directed in a slightly different direction on a separate trail out into the South-East of the network. This section introduces some technical terrain with rocks, single track and features to keep runners awake. Once back under the Karkloof Road, runners have a break from single track along forestry road, before joining into the popular Supa20 mountain bike trail bringing runners out at the Karkloof Falls. Runners get a slightly different return route to the Karkloof Club with a climb up to further single track, and a peaceful home stretch along the Karkloof River.