A somewhat uninspiring but pleasant bushwalk between Gordon and Thornleigh, which is mostly along the Lane Cove Valley Walk (which is part of the Great North Walk).
The Lane Cove River Loop walk does a circuit from Browns Waterhole along both sides of the Lane Cove River, using some of the less-busy tracks in the Lane Cove National Park..
Sams Creek Loop combines Sams Creek Trail and the Berkeley Fire Trail in Berowra, to create a pleasant bushwalk that avoids the crowds.
A fairly demanding walk along an undulating ridge to Taffys Rock, a large sandstone platform that provides panoramic views over the Hawkesbury River and Cowan Creek
The Pogson Trig Loop combines the Blue Gum Walk, Pogson Trig Trail, Quarry Firetrail and Benowie Track (Great North Walk). Sections of this loop require approval (as it crosses behind the Hornsby rifle range), or the walk can be accessed from both Westleigh and Hornsby to avoid the closed sections of track.
Wondabyne to Woy Woy via Pindar Cave and Mt Wondabyne is a interesting bushwalk in the Brisbane Water National Park. It incorporates a section of the Great North Walk, as well as a side-track to the impressive Pindar Cave.
A short but challenging walk from Cowan to Berowra railway stations, via Berowra Waters and through a number of valleys.
Thornleigh to Berowra (or Mt Ku-ring-gai) is one of the more popular and varied sections of the Great North Walk, which traverses the Berowra Valley National Park Park. It can be done in shorter sections from around 7km to 30km, over 1-2 days.
Brooklyn to Cowan forms part of the Great North Walk, with the track ascending from Brooklyn and traversing a number of ridges before descending to Cowan Creek. The final section is a steep ascent from Jerusalem Bay to Cowan.