The Circular Kickstart – EU CHALLENGE is a 6-month acceleration program directed to EIC Accelerator beneficiaries. The Circular Kickstart Programme has 5 building blocks including: a) Circular StartersClass: an online masterclass on circular entrepreneurship, business models, value propositions, value chain architecture and brand positioning.; b) Circular Sprints: intensive workshops (sprints) for groups of max. 10 start-ups in which we implement the tools & methodologies for circular business building.; c) 1-to-1 expertise or coaching: private coaching sessions with experts in several circular business domains. Here we provide tailor-made advice for start-ups to accelerate even faster.; d) Mentorship: we match start-ups with mentors (experienced entrepreneurs) and make sure every start-up has a mentor to tackle specific start-up challenges (building a team, attracting investors, creating partnerships, etc.). e) Circular Start-up community (& events): we bring the community together to network, set up events to attract start-ups in our community, share best practices, etc. Hybrid implementation.