The Betka River is located approximately 2.5 kilometres from Mallacoota in Far East Gippsland, Victoria, flowing through the lush native forests of Croajingolong National Park before meeting the coast. The river is tidal in its lower reaches, with salty water in the inlet transitioning to fresh water further upstream, and the bottom changes from sand near the mouth to mud as you progress upriver.

There are two access points near the river mouth: a carpark at the beach, from which paddlers can launch directly into the inlet, and a small gravel boat ramp located across the road. Launching at low tide requires care, as water depth in the inlet can be minimal, and a kayak trolley is recommended for getting boats from the carpark to the water. Paddlers should be mindful of tidal conditions when planning their trip, as low tide can make launching and paddling the inlet challenging.

From the launch point, the route heads upstream, passing under a road bridge — where oysters colonise the pylons — and continuing into the river proper. Progress upstream is eventually halted by fallen trees, making this a there-and-back paddle rather than a through-route. The distance paddleable varies with conditions and water levels.

The river corridor shows visible evidence of past bushfires, with burnt melaleucas lining the banks and some having fallen into the water. These fallen trees also contribute to the blockages that limit upstream travel. Wildlife is a notable feature of the area, consistent with the river's setting within a national park.

Wind can be a significant factor in the broader Mallacoota region, and on days with strong winds forecast — which can reach 30 kilometres per hour or more — the Betka River serves as a sheltered alternative to paddling the more exposed Mallacoota Inlet lakes. The river's relatively protected character makes it a practical option when open-water conditions are unfavourable.