The aim of this research is to analyze the influence of supply chain and digital marketing in increasing the acceleration of repositioning in the Millennial Generation and its implications for the sustainability of cooperatives in the city of Palangka Raya where the study was executed. The sample in this study was 250 respondents consisting of the millennial generation (born 1981-1996) and Generation Z (born 1997-2012), using the Stratified random sampling technique. Data collected through questionnaires was then analyzed using SEM-PLS. The findings of the research and data analysis indicate that: Supply Chain and Digital Marketing directly have a positive and significant effect on the Acceleration of Repositioning in the Millennial Generation in Palangka Raya City; Apart from that, Supply Chain, Digital Marketing and Accelerated Repositioning to the Millennial Generation directly have a positive and significant impact on the Sustainability of Cooperatives in the City of Palangka Raya; Accelerating Repositioning in the Millennial Generation was able to partially mediate Supply Chain and Digital Marketing towards Cooperative Sustainability in Palangka Raya City, Central Kalimantan Province, Indonesia. So, it can be concluded that to improve Cooperative Sustainability among the Millennial Generation in Indonesia, important factors that must be improved include Supply Chain, Digital Marketing, and Accelerated Repositioning.