The “Training the adults and prototyping their business models for the circular economy” training activity of the AGILE4CIRC project took place from the 25th to the 31st of May 2021 online. These were five days of intense training full of influential speakers and interactive workshops. Thirty-seven participants from Spain, North Macedonia, Greece and Luxembourg had the opportunity to learn, discuss their entrepreneurial ideas and collaborate with other like-minded young and aspiring entrepreneurs. The training was hosted in a pleasant and friendly atmosphere in which everyone felt encouraged to participate actively. All the participants expressed their satisfaction with the training they attended and look forward to the next project incubation activities in the months to come.