Trail summary
Hike overview
This hike commences at the junction of Greendale-Trentham Road and O'Briens Road and follows O'Briens Road for approximately 5km to O'Briens Crossing. The gravel road is well formed and it's an easy walk as the road gradually descends to the Lerderderg River.
From O'Briens Crossing, walk up the steps past the old toilet block site and follow the steep ridge following Byers Back track. The trail crosses Amber Lane then continues along to Gribble Track. Turns right at the Gribble Track junction and descend the steep track down to the Lerderderg River and the Tunnel.
The Tunnel is a 200 year old river diversion tunnel, dug by hand during the gold mining era. Though it's obviously an interesting historical site and no doubt a feat of human engineering, its entrance is currently blocked by flood debris so it's not the significant feature it once was.
After exploring this area, retrace your steps, ascending Gribble Track to Byers Back Track which runs for approximately 12.5 kms between Blackwood and O'Brien's Crossing in the Lerderderg State Park.
The route largely follows old water races which were cut into the mountainside to transfer water from dams or the river to downstream alluvial gold workings where panning for gold would be undertaken. As water originally flowed in them, the old water courses are basically level and follow the contours of the hillside meaning that the hike is relatively flat at times. Despite being relatively flat, the hike does present technical challenges along the way such as rocks, fallen trees, washouts, stairs, steep drop offs and loose surfaces. The hike is relatively flat and quite easy but it does provide a few challenges particularly when wet.
The vegetation is largely gum trees for most of the way but as the track gets more elevated in the steeper sections of the gorge, the forest varies and provides excellent views out over the Lerderderg River. A number of mines and gold diggings are passed on the way along the trail.
After approximately 13.7km you will arrive at the junction of Websters Track. Turn left and ascend the track to the junction of Kangaroo Track. Turning right at Kangaroo Track with take you through dry open woodland back to O'Briens Road where you will turn right and walk a short distance back to the trail head.
Map and GPX file
Max elevation: 694 m
Min elevation: 447 m
Total climbing: 758 m
Total descent: -758 m
Getting there
Closest towns to this walk: Maddingley, Bacchus Marsh, Blackwood, Werribee, Gisborne
How to get to Lerderderg State ParkThe trail head is located approximately 5km north of Greendale at the junction of Greendale-Trentham Road and O’Briens Road.
About the region
Rising in the Great Dividing Range, the Lerderderg River has cut a 300 metre deep gorge through sandstone and slate, almost bisecting the park. The park has a wide variety of vegetation and wildlife and some interesting relics of gold mining. Lerderderg State Park encompasses scenic and geological gorge formations surrounding the Lerderderg River as well as the volcanic cone of Mount Blackwood. The adjacent and separate block called the Pyrete Range forms part of the park. The Lerderderg is known for its remote setting and the 300m deep Lerderderg River gorge is a dominant feature. Private land abuts the park to the south and the Wombat State forest abuts to the north and west.
Similar trails nearby
Looking for hikes and trails in Lerderderg State Park or nearby? Try these similar graded walks.
Track grade
Grade 3 (Moderate) - Walks for Most Fitness Levels: Grade 3 on the AWTGS represents moderate walking tracks. These are ideal for walkers with some fitness who are comfortable with some hills and uneven terrain. While suitable for most ages, some bushwalking experience is recommended to ensure a safe and enjoyable experience. Tracks may have short, steep hill sections, a rough surface, and many steps. The total distance of a Grade 3 walk can be up to 20 kilometers.
Explore safe
Plan ahead and hike safely! Carry enough water, pack layers for changing conditions, and bring safety gear like a torch, PLB, and reliable communication device. Check official sources for trail updates, closures, and access requirements, and review local weather and bushfire advice. Most importantly, share your plans with someone before you go. Being prepared makes for a safer and more enjoyable hike! Stay Safe, Explore More, and Always #ExploreSafe.
Packing checklists
What you carry in your pack depends on factors like weather, terrain, and your adventure type. Not sure what to bring? My free planning, food, and packing checklists are a great starting point, covering day hikes, overnight trips, and multi-day adventures. Use them to customise your kit and always prioritise safety.
Let someone know
Before heading out, take a moment to fill out your trip intentions form. It’s a quick way to share your hike details with family or friends. If something goes wrong, they can notify emergency services, ensuring a faster response and peace of mind. Stay safe and enjoy your adventure
Suggest an edit
Spotted a change on this trail? Maybe there are new features, the route has shifted, or the trail is permanently closed. Whatever the update, I’d love your input. Your feedback helps fellow hikers stay informed and ensures that our trail info stays fresh and reliable.
Acknowledgement of Country
Trail Hiking Australia acknowledges the Traditional Owners of the lands on which we hike and pay respects to their Elders, past and present, and we acknowledge the First Nations people of other communities who may be here today.