Trail summary
Safety advice
Hartnett Falls is only accessible as part of the Overland Track, a multi-day hike through Tasmania's Cradle Mountain-Lake St Clair National Park.
Hike overview
Hartnett Falls is one of the three striking waterfalls along the Mersey River, located within Cradle Mountain-Lake St Clair National Park. These falls are easily accessible as part of the renowned Overland Track, a multi-day hike through some of Tasmania's most breathtaking wilderness. The hike to Hartnett Falls is a 1.5-kilometre, grade 4 track that typically takes around 45 minutes to complete.
The falls themselves are a highlight of the Overland Track, with water cascading 20 metres into a narrow gorge. In winter and spring, after heavy rainfall, the falls create a dramatic spray that soaks onlookers standing even 100 metres away. During the warmer summer months, when the water flow is lower, the pools at both the base and top of the falls provide refreshing swimming holes, offering a perfect spot to cool off after a day’s walk.
To reach Hartnett Falls, hikers can take a detour from the main Overland Track on the fifth day of their hike, while heading towards Lake St Clair from Cradle Mountain. The track is well-marked and descends gently towards the falls, offering stunning views along the way. As the path narrows, it becomes steeper, leading to the base of the falls. There is a stream crossing along the route, which can be challenging at times, but the effort is definitely worth it for the chance to see these impressive falls up close. For anyone hiking the Overland Track, Hartnett Falls is a must-see destination.
Map and GPX file
Looks like I don’t have a GPX file for this trail yet. If you have one you’d be willing to share, please email it to me so we can help other hikers have a safer, easier time out there. I’ll double-check each file to make sure it aligns with official tracks and topo maps before adding it to this hike. Thanks so much for helping build an even better hiking resource.
Getting there
Closest towns to this walk: Cradle Mountain, Sheffield, Tullah, Moina, Waratah
Hartnett Falls is one of three stunning waterfalls along the Mersey River, accessible as part of the Overland Track, a multi-day hike through Tasmania’s Cradle Mountain-Lake St Clair National Park.
Photo gallery
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Track grade
Grade 4 (Hard) - Challenging Walks for Experienced Walkers: Grade 4 on the AWTGS signifies challenging walking tracks. Bushwalking experience is recommended for these tracks, which may be long, rough, and very steep. Directional signage may be limited, requiring a good sense of navigation. These walks are suited for experienced walkers who are comfortable with steeper inclines, rougher terrain, and potentially longer distances.
About the region
Exploring Cradle Mountain-Lake St Clair National Park
Cradle Mountain-Lake St Clair National Park, located in the heart of Tasmania, is an extraordinary destination within the Tasmanian World Heritage Area. Just over two hours’ drive (150 km) from Launceston and around four hours (250 km) from Hobart, this park is celebrated for its striking landscapes, diverse ecosystems, and abundance of wildlife. Whether you're a seasoned hiker or simply enjoy the serenity of nature, this park has something to offer.
The park is a showcase of nature's diversity, from glacial lakes and alpine moorlands to dense rainforests and dramatic peaks. Its seasonal transformations are equally captivating. Winter blankets the terrain with snow, while autumn brings vibrant hues as the deciduous fagus turns shades of yellow, orange, and red. In spring, the bushland comes alive with joeys and echidnas, while summer invites visitors to wade into crystal-clear lakes framed by blooming wildflowers.
Cradle Mountain itself is an icon of the park, offering a network of walking tracks for all levels. Easy strolls take you through lush forests and past tranquil streams, while more challenging hikes, such as the renowned Overland Track, traverse rugged terrain. Spanning 80 kilometres and typically completed in 5-6 days, the Overland Track is a must for experienced bushwalkers, offering a journey through breathtaking alpine scenery. For those who prefer shorter walks, the park’s well-maintained trails make exploring its wonders accessible to everyone.
Lake St Clair, situated at the southern end of the park, is equally enchanting. Known as leeawuleena—‘sleeping water’—by the Aboriginal people, the lake exudes tranquillity, particularly on calm days when its glassy surface reflects the surrounding landscape. Lake St Clair is the endpoint of the Overland Track, making it a rewarding finish line for hikers who’ve traversed the park’s diverse terrain.
Beyond the iconic multi-day hike, Lake St Clair offers an array of bushwalks and trails. Short tracks wind through ancient rainforests, while longer paths lead to stunning mountain summits and secluded alpine lakes. Each trail promises an immersive experience, with the chance to encounter wildlife like wombats, platypus, Tasmanian devils, and the distinctive black currawong along the way.
Cradle Mountain-Lake St Clair National Park combines natural beauty, adventure, and opportunities for reflection, ensuring every visit is unforgettable. Whether you're seeking an adventurous hike, a casual walk, or a family-friendly outing, this park provides it all.
Want to find the best trails in Cradle Mountain-Lake St Clair National Park for an adventurous hike, casual walk, or a family trip? Trail Hiking Australia has the best trails for walking, hiking, running, and more.
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Let someone know
Adventure with Confidence: Register Your Trip Plans
Before you hit the trail, take a moment to fill out our trip intentions form. It’s a simple way to share important details about your hike with family or friends. If things don’t go as planned and you’re not back on time, they can easily notify emergency services, helping to ensure a quick response and reducing worry. Enjoy your outdoor adventure knowing that you’ve taken a smart step for your safety.
Gear to consider
What you carry in your pack depends on factors like weather, terrain, time of year, the type of adventure, and your personal preferences. Unsure what gear to bring? My free planning, food, and packing checklists offer a great starting point, covering essentials for day hikes, overnight trips, and multi-day adventures. Use them as a guide to customise your kit to suit your needs, always prioritising safety above all else.
Explore safe
Plan ahead and hike safely! Always carry enough water and pack clothing layers to adapt to changing conditions. Bring essential safety gear, including a torch, a Personal Locator Beacon (PLB), and a reliable communication device. Check official government sources for trail updates, temporary closures, and access requirements. Before heading out, review local weather and bushfire advice, including warnings and planned burns. Most importantly, let someone know your plans before you go. Being prepared ensures a safer and more enjoyable hike! Stay Safe, Explore More, and Always #ExploreSafe
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.