Overview
- An international team led by the University of Aarhus with codirectors at the Universitat Autònoma de Barcelona published the resource in Scientific Data on November 6, 2025.
- The atlas organizes the network into 14,769 georeferenced segments, each with metadata on route geometry, slope, and a quantified confidence score.
- Evidence levels are reported as 2.7% certain, 89.8% conjectural, and 7.4% hypothetical, and the authors note that not all mapped routes were necessarily active at the same time.
- Researchers integrated the Itinerarium Antonini, the Tabula Peutingeriana, milestones, archaeological records, satellite imagery, and digitized World War II–era aerial photos to identify lost corridors.
- The network includes more than 103,000 kilometers of principal roads and over 195,000 kilometers of secondary and local routes across former Roman territories, with an interactive, updatable map available at itiner-e.org.