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Grizzly Trail, Wambenger Trails, Wellington NP

Kaneang & Wiilman Noongar Country

Trail difficulty
Trail difficulty
  • Length 5.4km
  • Est. time Less than 1 hour
  • One-way
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Grizzly is the highlight of the Mount Lennard mountain bike trails in Wellington National Park, near Collie in Western Australia.

The trail starts from Lennard Rd and descends from Mt Lennard adjacent to Pile Rd and down to the lower trailhead, tightly weaving its way through the mature jarrah forest, and granite outcrops to provide spectacular views of the lower Collie River Valley

The average four percent gradient offers challenges for beginners to old pros with bermed turns and log rides for those who are up for the challenge. 

Return along the Boylan Trail for a 12km loop. Both Boylan and Grizzly are rated Blue.

This trail is part of the following destinations:

Collie Visitor Centre

(08) 9734 2051

Other Links

Flora and Fauna Statistics

10+
Mammal species
150+
Bird species
300+
Flowering plant species

Wellington National Park protects 25,000 hectares of forest in Western Australia's South West, serving as a critical refuge for threatened native animals and over 300 wildflower species.

The forest is predominantly made up of Jarrah, Marri and Yarri / Blackbutt trees, intersperced with Banksia groves and more open granite outcrops. In the cooler months during late autumn and winter, fungi and mosses can be found throughout the area. In spring, the wildflowers bloom, inlcuding colorful Banksias and Grevilleas, Clematis vines and Darwinia shrubs, and smaller plants such as sundews, triggerplants and orchids. 

Over 150 species of birds live in the area, including Black Cockatoos (Red-tailed, Carnaby's and Baudin's), fairy wrens, robins and Currawongs. Threatened mammals such as the Chuditch (Western Quoll), Quokka, Woylie (Brush-tailed Bettong), Southern Brown Bandicoot, Western Ringtail Possum, and Brush-tailed Phascogale can also be spotted. The park's granite gorges and fallen logs provide excellent camouflage for the Carpet Python. 


Keep an eye out for these species:

South-western Spotted Scrubwren

Sericornis (Sericornis) frontalis maculatus

Animalia: Aves

South-western Grey Currawong

Strepera (Neostrepera) versicolor plumbea

Animalia: Aves

Australian Ringneck

Barnardius zonarius

Animalia: Aves

Red-winged Fairy-wren

Malurus (Leggeornis) elegans

Animalia: Aves

Common Brushtail Possum

Trichosurus vulpecula

Animalia: Mammalia

Short-beaked Echidna

Tachyglossus aculeatus

Animalia: Mammalia

Slender Tree Frog

Litoria adelaidensis

Animalia: Amphibia

Hibbertia vaginata

Plantae: Equisetopsida

Blue Lady Orchid

Thelymitra crinita

Plantae: Equisetopsida

Diaphanous Fork-moss

Dicranoloma diaphanoneuron

Plantae: Bryopsida

Lemon-scented Darwinia

Darwinia citriodora

Plantae: Equisetopsida

Forest Red-tailed Black-cockatoo

Calyptorhynchus (Calyptorhynchus) banksii naso

Animalia: Aves

Conservation status: Vulnerable

VU

Expand your trip Browse and book with great businesses nearby.

With many businesses in the local area, planning your trip has never been easier.

Black Diamond Lodge

Collie

Collie’s funkiest affordable accommodation

Glen Mervyn Lodge

Mumballup

A country retreat on 50 acres overlooking the Ferguson Hills, with the Bibbulmun Track passing the along the edge of property.

Mandia B&B

Collie

Mandia is a quiet rural property that has a range of beautiful rooms available three kms north of Collie.
The Tuscan inspired BBQ area is a perfect outdoor setting amongst the garden.

Red Tail Retreat

Collie

Red Tail Retreat has everything you will need for a relaxing stay after exploring the Collie River Valley and surrounds.

Whispering Pines Bed and Breakfast

Collie

The Ultimate Getaway - Tranquil Whispering Pines is situated amongst natural bushland at the edge of the forest on the banks of the Collie River.

Kiosk at The Dam

Worsley

A Licensed Cafe in the Centre of the Wellington National Park. Local produce, wines & craft Beer & Cider
Mountain Bike Hire & Glamping also available.

Toscas Boutique

Collie

Toscas Boutique is a fashion store for the style conscious woman looking to create a wardrobe of chic, affordable pieces and maintain a classic, feminine style.

Collie River Valley Visitor Centre

Collie

The Visitor Centre can provide extensive information on the region with maps, brochures, and a photographic display. We also have videos on local history, mining and power generation.

Collie Ridge Motel

Collie

Collie's First Resort coming

Collie River Valley Tourist Park

Collie

Be welcomed by our friendly staff when staying in Collie with your tent, caravan or in one of our cabins. The rivers, murals, walks and mountain bike trails are waiting.

Want your business featured here?

We’re always looking to support local businesses and enrich the trailgoer experience.

Be trail ready

Here is everything you need to know before visiting this trail.

Time / Duration

25 minutes

Length

5.4km

Elevation

Climb 230 metres and descend 330 metres

Fees

No fees apply

Trail Access

Road 2WD. Approximately 2 hours (180km) drive from Perth, 30 minutes (25km) from Bunbury or 30 minutes (35km) from Collie.

Trail Start

Access the trail from upper trailhead car park on Lennard Road, off Pile Road in Wellington National Park

Get directions

Trail End

Pile Road Trailhead

Get directions

When to go

March to November

What’s the weather like?

Mountain Bike

Moderate

Recommended for moderate intermediate riders with some technical mountain biking experience. Typically narrow trails with loose, soft, rocky or slippery sections and hills with short steep sections. Riders will encounter obstacles and technical trail features.

Additional information

Trail has a natural surface of granite and rock so caution is advised.

What To Pack

Prohibited items

No pets

Safety

Mountain biking is a potentially dangerous activity with inherent risks. Ride within your skills and abilities. Ride with a buddy. Do not rely on your mobile phone. Coverage in the area is limited.

Facilities

  • Car Park

Trail information updated
10th June 2026

Today Jun 10, 1:59pm

14°C

Feels like 14°C

Max 14°

Min 10°

Precipitation: 100%

Visibility: 10km

Wind: 3.5km/h N

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3 trail goers have rated this trail as 4.33 out of 5!

We love to hear from people who've been on our Western Australian trails, so it would be most appreciated it if you wanted to leave a review.

D Max

Reviewed 9 Jan 2019, 12:35pm

I rode this Trail again last week and I admit that I have to eat my words on the previous comment as this track was amazing, had so much fun on the bottom section.
D Max

Reviewed 19 Jan 2018, 12:48pm

A few steep climbs and it lacks a bit of Maintenance however, it wasn't crowded and a few cold ones at the Moody Cow afterwards never goes astray.
Colleen Smith

Reviewed 2 Sep 2016, 5:43pm

What fun! We hit this up on the way home from a weekend in Pemberton. Otherwise called Pile Road, there is a network of trails to enjoy here. The loop we did was great fun and had a bit of everything. Bunbury - you are lucky to have this in your backyard!

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Trails are free and offer countless benefits to our community, from fostering fun and fitness to encouraging social connection, exploration, and personal challenges. These exceptional trail experiences are made possible through the support and collaboration of these great organisations and initiatives: