The objective of this article is to analyze the behavior of the participants of the coopetition network generated around the Poloiguassu Institute under the premise of cooperating in order to achieve common benefits. This network is an axis that considers the existence of shared resources for the sustainable development of the border regions between Argentina, Brazil and Paraguay. In is a qualitative research, a case study that uses analysis techniques based on official reports, non-participative and in-depth interviews. Results prove that in this network there is relations between companies based on; pure competition, coopetition based on competition, coopetition based on cooperation or pure cooperation, even though coopetition prevails. It was verified that the high presence of coopetiton due to the awareness of a shared location is of vital importance for the sustainable development of this touristic sector.