The primary objective of the event is to establish the foundation for an international Terrestrial Very-Long-Baseline Atom Interferometry (TVLBAI) proto-collaboration. This collaborative effort aims to bring together researchers from diverse institutions, fostering strategic discussions and securing funding for terrestrial large-scale Atom Interferometer projects. The goal of the TVLBAI initiative is to develop a comprehensive roadmap outlining design choices, technological considerations, and science drivers for one or more kilometer-scale detectors, which are expected to become operational in the mid-2030s.