The Glenelg River in south-west Victoria offers 75 kilometres of flatwater paddling between Dartmoor and Nelson, running through the Lower Glenelg National Park near the South Australian border. The park, established in 1968, covers 21,300 hectares and protects the lower reaches of the river, including a series of limestone gorges formed 25 to 40 million years ago when the region was submerged beneath a shallow sea. The river carries essentially no current, as noted by paddlers who found that even after heavy rain the water remained still.

The standard multi-day trip runs from Dartmoor downstream to Nelson, a journey most paddlers complete in three to five days. Seven campsites are reserved exclusively for canoeists and kayakers, with a limit of 20 campers per site; advance booking is required through Parks Victoria. Access points include Dartmoor, Winnap, and Nelson, and canoe and kayak hire is available at all three locations, with many operators offering drop-off and pick-up services at various points along the river. Shorter day trips are also possible, particularly from Nelson toward the river mouth. Several landings along the route have small jetties or boat ramps, including Wilson Hall, Sapling Creek, Red Gum Landing, Forest Camp North, and McLennan's Punt.

Autumn is noted as a particularly good time to paddle, with mild temperatures and calm water. The park falls within the South West fire district, and campfires are prohibited on Total Fire Ban days, though gas cookers remain permitted. Paddlers should check fire danger ratings before and during any trip via the Vic Emergency App or by calling 1800 226 226.

Wildlife is abundant along the river corridor, and wallabies are commonly seen from the water's edge. The limestone gorge scenery is the defining visual feature of the route. The park is approximately 420 kilometres from Melbourne (roughly a four-to-five-hour drive) and 490 kilometres from Adelaide.