The cargo carrier industry today comprises one of the mainstays of the economy of the country for that reason, in the present investigation shows the transport logistics network load case (Bogota-Buenaventura), which can be identified the flow of goods from the point of origin (Bogota) to the end customer (Whatever their destination within the established route). For this transport is carried out there are different variables, actors, factors, indicators, interacting, establishing various problems of the sector, as can be on cost, distance, time of delivery is reflected in the level of customer service, among others. According to the problem created is displayed system modeling using system dynamics (SD), aiming to explain the low returns that occurs when transporting goods on the route. The system dynamics methodology employed was divided thus: Conceptualization, which were identified in the parameters, variables of level, flow, auxiliaries, constants and relationships involved, formalization, we determined the logical modeling using causal diagrams and Forrester in this sense it is translated into the language of system dynamics (SD); formulation: Once translated the DS system is set to language formulation and equations relating the variables of the same; deployment computer: It incorporates the causal diagram formulation and computational tool, in this case we used the Vensim ® software; validation: adjustments are made in the architecture and development model as the case to be determined; experimentation: the desired data are generated, designing scenarios for sensitivity analysis, interpretation: We conceptualize the results obtained from the modeling desired. In DS modeling, it appears that there are several factors that affect the overall system as fixed and variable costs, making this lose effectiveness.