The Rio Negro is a significant river flowing through the state of Mato Grosso do Sul in southwestern Brazil. It is a central feature of the Pantanal, the world's largest tropical wetland area. The river's name, meaning "black river," hints at its aesthetic character, which is shaped by the surrounding landscape. A major portion of the river flows through the Pantanal do Rio Negro State Park, a protected area renowned for its exceptional biodiversity. The overall paddling experience here is defined by vast, seemingly endless waterways winding through a pristine and wildlife-rich environment. The vegetation is notably beautiful, and the area is most significant for its abundant wildlife and birdlife, including iconic species such as the Pantanal jaguar.

Access to the river for paddling is challenging. The primary gateway to the Pantanal do Rio Negro State Park and the river itself typically involves a combination of road and boat travel originating from the nearby cities of Aquidauana or Corumbá. These cities serve as the logistical bases for organizing trips into the region. Specific public access points, such as boat ramps and launch points, are available for paddlers. The rivers in this area are described as huge, indicating a substantial water volume and width that paddlers should be prepared for. Due to the remote and protected nature of the Pantanal, paddlers should anticipate limited facilities or amenities directly on the river and must plan for a self-sufficient expedition. The experience is best suited for those seeking immersion in a wild, undeveloped natural setting where the observation of flora and fauna is the primary attraction.