The Rio Santo Antônio is a river in the state of Tocantins in central Brazil. For paddlers, several specific access points and routes have been identified, providing options for trips of varying lengths. These include routes from Ponta d'Água to Santa União, covering approximately 226 kilometers with an elevation change of 397 meters, and from Vila Quixaba to Boa Vista, a shorter trip of about 44 kilometers with 58 meters of elevation change. Other documented routes are a 16-kilometer section near Caçada and a 69-kilometer stretch from a bridge to Morada do piau. The river's character, based on these route distances and elevation profiles, suggests a mix of longer, more significant journeys and shorter, more accessible day trips. Planning tools and information on access points, water conditions, and land boundaries are available through specific paddling and outdoor applications. These resources can help paddlers uncover necessary facilities such as boat ramps for an outing. The river's setting in the Brazilian interior contributes to its overall aesthetic, flowing through the Tocantins landscape.