Innes National Park
| Location | Innes National Park, Yorke Peninsula |
| Start/End Point | Campgrounds at Gym Beach or Browns Beach |
| Distance | 11 km return |
| Time | 4 hours |
| Difficulty | Intermediate |
| Activity | Walking |
| Region | Yorke Peninsula |
| Accommodation | Camping, mid-range and premium options — See accommodation options |
| Key Feature | Coastal mallee, high sand dunes, diverse birdlife |
Through the Mallee Between Two Beaches
At the foot of the Yorke Peninsula, where the land narrows to a windswept point surrounded by Southern Ocean swells, Innes National Park protects some of the most dramatic coastal landscapes in South Australia. The Gym Beach Hike is an eleven-kilometre return walk that connects two of the park’s most beautiful beaches — Gym Beach and Browns Beach — through dense mallee vegetation, high sand dunes, and habitat alive with native birds and orchids. It is one of the park’s longer walks, requiring four hours and rewarding every minute with the kind of coastal wilderness that makes Innes a favourite among South Australian bushwalkers.
Innes National Park occupies the southwestern tip of the Yorke Peninsula, where rugged cliffs and sandy beaches provide the backdrop for camping, bushwalking, fishing, and surfing. The park is also steeped in maritime history — the wreck of the Ethel lies offshore, historic lighthouses guard the headlands, and the abandoned township of Inneston tells the story of a gypsum mining community that flourished and faded in the early twentieth century.
The Walk
Through the Mallee
The trail passes through dense mallee vegetation that characterises much of Innes National Park’s interior. This low, multi-stemmed eucalypt woodland is perfectly adapted to the sandy soils and harsh coastal conditions of the peninsula’s tip. Walking through the mallee, the trail is sheltered from the coastal winds, creating an intimate bushwalking experience where the sounds are birdsong and rustling leaves rather than crashing waves.
Sand Dunes and Wildflowers
The route crosses high sand dune areas that offer elevated views across the surrounding landscape. The transition from mallee to dune vegetation brings changes in the plant communities — coastal shrubs, native grasses, and in season, native orchids that add splashes of colour to the sandy terrain. The diversity of flora reflects the park’s position at the junction of different soil types and the influence of the marine environment on the coastal vegetation.
Birdlife
Innes National Park is renowned for its birdlife, and this trail passes through prime habitat. The mallee and coastal scrub support an abundance of species — honeyeaters, wrens, and robins are commonly encountered, while raptors ride the thermals above the dunes. Keep watch for the western whipbird, a threatened species for which Innes provides critical habitat, its distinctive call carrying through the mallee on still mornings.
Planning Your Walk
The trail can be started from either Gym Beach or Browns Beach campgrounds, making it ideal for campers based at either location. The walk can be taken in either direction. All of Innes National Park is accessible by 2WD vehicle, making it perfect for day visits as well as extended camping trips. Park entry fees apply. Carry water and sun protection, as the trail offers limited shade in the dune sections. The best walking months are autumn through spring, when temperatures are moderate and wildflowers are in bloom.
The Gym Beach Hike is Innes National Park at its most immersive — four hours of walking through the coastal mallee and sand dunes that define this remarkable peninsula tip. Between two beautiful beaches, through habitat alive with birds and wildflowers, this trail delivers the kind of extended bushwalking experience that turns a day visit into a lasting memory.
Where to Stay
Planning an overnight trip? See our Adelaide Hills Accommodation Guide for the best places to stay near this trail.