The rural products originated in the intersections along the Trans-Amazonian Highway are displayed and sold in the Altamira’s Municipal Free Market, Farmers’ Market and the Brasilia Market. The first two are connected and hardly distinguished from one another, located in the commercial center of the city and known as ‘Municipal Market’. They have their peak on Saturday, with a slow movement during the week. The third one, located in the Brasilia neighborhood, stretches along one of the main Altamira streets, the Abel Figueiredo, which offers a variety of products on Sunday mornings. In this article, we describe the markets in their structural characteristics that presuppose the analyses of the social and economic relations there developed. Keywords: Market, Trans-Amazonian highway, agricultural production.