Thornleigh to Hornsby

4 hrs

10.2 km One way

526 m

Hard track
Starting at Thornleigh station you walk through suburban streets for a short while before diving into the bush at the southern end of Berowra Valley Regional Park. Soon after visiting the site of the historic Zig Zag railway you start wandering through the Berowra Creek valley, passing a few cascading creeks. The track undulates along the side of the valley visiting a range of environments from moist fern forest to the drier grass tree and eucalypt forests of the ridge. There is a short side trip to visit the Westleigh engravings and a chance to pop down to fishponds, before climbing up the depression era stone steps to Hornsby station.

Maps for the Thornleigh to Hornsby walk

You can download the PDF for this walk to print a map.
These maps below cover the walk and the wider area around the walk, they are worth carrying for safety reasons.
Hornsby 1:25 000 Map Series 91304S HORNSBY NSW-91304S
Sydney 1:100 000 Map Series 9130 SYDNEY 9130

Cross sectional view of the Thornleigh to Hornsby bushwalking track

Analysis and summary of the altitude variation on the Thornleigh to Hornsby

Overview of this walks grade – based on the AS 2156.1 – 2001

Under this standard, a walk is graded based on the most difficult section of the walk.

Length 10.2 km
Time 4 hrs

Grade 4/6

Hard track
AS 2156.1 Gradient Very steep (4/6)
Quality of track Formed track, with some branches and other obstacles (3/6)
Signs Directional signs along the way (3/6)
Experience Required Moderate level of bushwalking experience recommended (4/6)
Weather Storms may impact on navigation and safety (3/6)
Infrastructure Limited facilities, not all cliffs are fenced (3/6)

Some more details of this walks Grading

Here is a bit more details explaining grading looking at sections of the walk


6km of this walk has short steep hills and another 1.3km is very steep. Whilst another 1.2km has gentle hills with occasional steps and the remaining 1.2km is flat with no steps.

Quality of track

6km of this walk follows a formed track, with some branches and other obstacles and another 4.2km follows a clear and well formed track or trail. The remaining (420m) follows a smooth and hardened path.


Around 8km of this walk has directional signs at most intersection, whilst the remaining 2.5km is clearly signposted.

Experience Required

4.8km of this walk requires no previous bushwalking experience and another 4.4km requires some bushwalking experience. The remaining (990m) requires a leader a with moderate level of bushwalking experience.


Around 9km of this walk is not usually affected by severe weather events (that would unexpectedly impact safety and navigation), whilst the remaining 990m is affected by storms that may impact your navigation and safety.


Around 7km of this walk has limited facilities (such as not all cliffs fenced), whilst the remaining 3km is close to useful facilities (such as fenced cliffs and seats).

Similar walks

A list of walks that share part of the track with the Thornleigh to Hornsby walk.

Other Nearby walks

A list of walks that start near the Thornleigh to Hornsby walk.

Plan your trip to and from the walk here

The Thornleigh to Hornsby walk starts at the Thornleigh Train Station (gps: -33.731949, 151.07815)
Your transport options to Thornleigh Train Station are by;
Train. (get details)
Bus. (get details)
Car. There is free parking available.
(get details)

The Thornleigh to Hornsby ends at the Hornsby Train Station (gps: -33.703509, 151.09801)
Your transport options to Hornsby Train Station are by;
Train. (get details)
Bus. (get details)
Car. There is free parking available.
(get details)

Fire Danger

Each park may have its own fire ban, this rating is only valid for today and is based on information from the RFS Please check the RFS Website for more information.

Weather Forest

This walk starts in the Metropolitan weather district always check the formal BOM forecast or pdf before starting your walk.

Forecast snapshot

Park Information & Alerts



Short URL =

Gallery images
There are other downloads I am still working on.
You will probably need to login to access these — still all free.
* KML (google earth file)
* GPX (GPS file)

Special Maps/ brochures
* A3 topo maps
* PDF with Lands Topo map base
* PDF with arial image (and map overlay)
I wanted to get the main site live first, this extra stuff will come in time.
Happy walking
Matt :)