This 10.5km endurance loop walk takes in all the Gs : the trails from Grosvenor Rd past Golden Jubilee Oval to Gwydir Ave and the Gibberagong Track, with plenty of ups and downs along the way for a total of 400m ascent.
The nicest stretch of this walk is the steep descent to Cockle Creek (or Gibberagong Creek as it is also known), followed by a cool walk through the forest beside Gibberagong Waterholes, and then the solid climb up to Grosvenor Rd. Gibberagong means “plenty of rocks”, and you will no doubt agree with that!
Cockle/Gibberagong Creek has it source near Burns Road in Wahroonga, and joins Cowan Creek at Bobbin Head. More than a century ago, Aboriginal middens were harvested here and the shells burnt to produce lime for shipping to Sydney to be used for mortar.
You can park and start this walk from a number of spots – but my starting point was determined by a desire to the do the big hill first, while I was still fresh, and to be able to stop at a coffee shop on my way home! I parked at the end of Murrua Ave. Starting from Murrua Ave also means that the high point on Golden Jubilee Oval makes a well timed spot to break. You can enjoy your morning tea while admiring the outlook over Ku-ring-gai National Park. Find a perch either up on the grassy oval, or the rocks in the trees behind the mountain bike track.
The walk is well signposted, simply follow the signs from Murrua Track to Gibberagong Track, and then to Gwydir Ave, after which follow the grass strip on the boundary between the rear of the houses and the bush until you reach Murrua Ave and your car. There are a number of options for intervals and side-walks on the recreational trails between Grosvenor Rd and Gwydir Ave, if you have extra time to explore.
The vegetation and terrain of this walk is quite varied, from steep paths, to pleasant forest trails and not so pleasant concrete. The concrete stretches are fairly recent, and no doubt make the steep roads passable for fire trucks in the wet. Even on gritty grey concrete climbs, it is still nicer traning outdoors than in the gym.
Ku-ring-gai Council publish a brochure of the trails between Grosvenor and Gwydir, with a map. Watch out for mountain bikers.