It feels longer than it is, but very worth it. Starting near Parkview it takes you on a nice loop around Mt Butler and Jardines Lookout and back to the start.
It’s possible to get water and snacks at Parkview supermarket. Small portable toilet also at the start. Public Toilet at Quarry Gap half way through.
Route: The loop is done in a clockwise direction.
From Central Exchange Square get bus 6 or 66, get off at stop ‘Wong Nai Chung Reservoir Park’ on Wong Nai Chung Gap Road at the petrol station (just passed Cricket Club). Go up the small stairs onto Tai Tam Reservoir Road and walk up the hill to Parkview.
When finished you can get the bus no 6 bus from Tai Tam Reservoir Road, Wong Nai Chung Gap Road Bus Stop (across the road from where you got off), this takes you into Admirality then Central.