The Rio Ituxi, also known as the Iquiri, is a significant river in the state of Amazonas, Brazil, flowing for approximately 878 kilometers as a tributary of the larger Purus River. Its course traverses remote subregions of the Amazon basin, including parts of Acre and Amazonas. The river's character is defined by its substantial length and its connection to the Purus system, with the Rio Iquiri noted as a joining watercourse. The river's environment includes at least six distinct side channels, indicating a complex and branching waterway system that can offer varied routes for exploration. This is a remote, wilderness river deep within the Amazon rainforest, implying a paddling experience focused on solitude and immersion in a vast natural environment. The area's significance is primarily ecological, forming part of the intricate hydrological network of the Amazon basin. Specific details regarding access points, hazards, seasonal water levels, water temperature, facilities, or regulations for paddlers are not detailed. Paddlers considering this river must undertake extensive independent research and preparation for a self-sufficient expedition into a remote and challenging environment.