The Human Reference Atlas (HRA) is a multiscale, multimodal, three-dimensional atlas of the anatomical structures and cells in the healthy human body. The HRA provides standard terminologies and data structures for describing specimens, biological structures, and spatial positions linked to existing ontologies. The Whole Person Physiome (WPP) project aims to build a multi-organ, multi-scale map and model of all physiological processes in healthy human adults. The final map and models will incorporate physiological processes alongside clinical measures and hospital codes, and will be AI-ready and data science compatible. This hackathon will bring together PIs, programmers, and key personnel from the HRA, WPP and other relevant teams to discuss the harmonization and integration of methods, data, and code across efforts.