The Glen Brook Trail is a 4.8-kilometre, grade 3 hike in John Forrest National Park, Western Australia. This well-marked loop follows Glen Brook in an anti-clockwise direction, winding past granite outcrops, through shaded gullies, and up to the dam before continuing deeper into the park. For those looking for a shorter walk, a 2.2-kilometre loop provides a more relaxed option while still capturing the beauty of the area. Several bridges and linking trails near the car park offer additional flexibility, making this walk suitable for a range of visitors.
John Forrest National Park, set in the Darling Ranges, is Western Australia’s oldest national park and is home to diverse landscapes, from heathlands to open wandoo woodlands and mixed jarrah-marri-wandoo forests. The Glen Brook Trail highlights this variety, with sections of dense vegetation giving way to rocky slopes and open bushland. In the cooler months, the brook flows more freely, creating peaceful spots along the way where you can pause and take in the surroundings.
For those completing the full 4.8-kilometre loop, the trail extends into the park’s southern section, reaching the headwaters of Glen Brook. The terrain is varied, with some rocky sections requiring careful footing, so it’s worth keeping an eye on the marker posts, especially near the granite outcrops. Whether you choose the shorter loop or explore the full circuit, this walk offers a rewarding way to experience the natural beauty and changing landscapes of John Forrest National Park.
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<h3>Glen Brook Dam Trail (4.8km)</h3>
Total distance: 5059 m
Max elevation: 189 m
Min elevation: 151 m
Total climbing: 57 m
Total descent: -60 m
<h3>Glen Brook Dam Loop (2.2km)</h3>
Total distance: 2194 m
Max elevation: 189 m
Min elevation: 151 m
Total climbing: 58 m
Total descent: -59 m
Getting to the trailhead: John Forrest National Park.
To reach the trailhead for the Glen Brook Dam Trail, head east along Great Eastern Highway and turn north into John Forrest National Park. Once inside the park, you’ll find the trailhead sign just across the brook, about 100 metres from the registration point. To get there, simply cross the bridge over Jane Brook, located directly north of the ranger’s office. While the trail was initially designed to be walked in a clockwise direction, it has since been found to be equally enjoyable when tackled anticlockwise. When you arrive at the trailhead, you can decide which direction suits you best before beginning your adventure.
Closest towns to this walk: Boya, Darlington, Gidgegannup, Glen Forrest, Gooseberry Hill, Greenmount, Helena Valley, Hovea, Kalamunda, Mahogany Creek, Midland, Mundaring, Parkerville, Sawyers Valley, Stoneville, Swan View
John Forrest National Park, located just 30 minutes from Perth, is one of the highlights of this area. As the first and oldest national park in Western Australia, it offers an array of scenic views, walking and cycling trails, and historic structures set against a backdrop of diverse wildlife. Upon arrival at the park, visitors can find numerous picturesque locations ideal for picnicking or using one of the available barbecues. The park features two waterfalls that flow during winter and spring—an especially beautiful time to witness the vibrant wildflowers in bloom.
The trails within John Forrest National Park lead adventurers through towering jarrah, marri, flooded gum, swamp peppermint, and paperbark trees. An intriguing feature is the Swan View Tunnel, which adds an element of mystery to your walk. While exploring these paths, you may encounter native wildlife such as western grey kangaroos lounging in their natural habitat. For those who prefer cycling, the Railway Reserves Trail offers an excellent opportunity to explore the area on two wheels. Whether you opt for a hike on one of the many trails or simply visit the lookouts, you’ll have plenty of chances to capture memorable photos showcasing views of Perth and the Swan Coastal Plain.
The cultural history of this region is equally significant. The Nyoongar people have inhabited the Midland to Guildford area long before European settlement. Historical accounts suggest that this area served as a hunting ground and that Jane Brook Valley was an ancient travel route used by the Nyoongar people to navigate across the Darling Scarp towards more open lands in the east. Jane Brook holds cultural importance as well; it is associated with the Dreamtime serpent known as Waugal, with local traditions stating that the rocks along this brook are remnants of this mythical creature.
Looking for more walks in or near John Forrest National Park? Try these trails with a similar difficulty grade.
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Regional Western Australia
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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.
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.
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.
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
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