The Cowan Track and Wilkins Track are both accessed via the Perimeter Trail in Duffys Forest, providing easy access to two lookouts over Cowan Creek and an Aboriginal engraving site.
A pleasant one-way walk from St Ives (via the Warrimoo Track) to Mt Ku-ring-gai station. It follows Cowan Creek and traverses Bobbin Head, where you can stop for a coffee or snack.
The Wallaroo Track at West Head is accessed via the Salvation Loop, and leads to a rocky platform with nice views over Cowan Creek.
The Curra Moors Loop is an alternative to doing the full Royal National Park Coast Walk. The circular walk is a shorter option that takes in some of the spectacular coastal scenery.