The Río Limay originates where the waters of Lago Nahuel Huapi spill out near Bariloche, flowing approximately 430 kilometers northeast through increasingly arid Patagonian steppe before joining the Río Neuquén to form the Río Negro. The river is large and powerful, characterized by a complex mix of currents and seams that give it a demanding, high-volume character. Its sheer size and volume make it one of the more formidable rivers in Patagonia.

For paddlers, the upper section near Bariloche offers a relatively accessible starting point. The put-in at Rincón Chico, located just outside the city, is a commonly used launch site and provides a gentle introduction to river paddling on the Limay. The boca — where the river exits Lago Nahuel Huapi — is only about 16 kilometers east of Bariloche, with public access on both sides of the stony shoreline. This upper reach is suitable for kayaking and introductory river canoeing, with dramatic Patagonian scenery throughout.

The middle section of the Limay runs along Ruta 237, which provides the primary road access to the river. However, most riverbank access along this stretch is private. Some landowners will grant access for a small fee or upon request, but floating the river by boat is the most practical way to experience this section. The towns of Bariloche and Piedra del Aguila serve as the main bases for the upper and middle sections respectively, with a range of accommodation options in both.

The river corridor passes through high-desert steppe landscape, and the scenery along the middle and lower reaches takes on a distinctly arid character compared to the forested upper section near Bariloche. The river's size and the remoteness of much of its course mean that paddlers should be well prepared and experienced in reading large, complex water. Commercial kayak and rafting operations based in Bariloche offer guided trips on the river for those seeking organized outings.