The Rio da Barra flows through the southern coast of Bahia near Trancoso, within the RPPN Rio do Brasil, a private natural reserve protecting more than 975 hectares of Atlantic Forest (Mata Atlântica). The river holds a notable place in Brazilian history: when a Portuguese expedition passed through in late 1501, the pau-brasil trees were in bloom, and the explorers named the waterway "Rio do Brasil," making it the first river in the country to receive a name from European colonizers. Today it is commonly known as Rio da Barra.

The paddling character is contemplative and calm. The water is warm and tranquil, flowing through mangroves and native Atlantic Forest vegetation. The route begins at the RPPN Rio do Brasil and follows the river downstream, passing through intact riparian habitat before reaching Praia do Rio da Barra, where the freshwater meets the sea. This point-to-point descent is the primary recommended route for kayakers. One accommodation in the area also offers a 10-minute motorboat trip along the riverbed to the beach, indicating the lower section is navigable by small motorized craft as well.

At the river mouth, the beach is flanked by tall, colorful cliffs that can reach up to 50 meters in height, displaying bands of white, red, orange, and darker tones. When the tide comes in, it is possible to swim from the river into the sea. Small lakes form near the river and add to the natural interest along the way. Kayak rentals are available in the area for those who do not bring their own equipment.

The RPPN Rio do Brasil designation means paddlers should be aware of the conservation status of the surrounding land. The river and its mouth remain in healthy condition from end to end. Access to the beach at the river mouth requires a parking fee of R$ 30 per vehicle, and the beach can also be reached on foot from Praia dos Nativos in Trancoso by walking left along the shoreline.