New Map Reveals Roman Empire’s Road Network Was Far More Extensive Than Previously Thought

An international team of researchers has unveiled a newly compiled map of the Roman Empire’s road network, expanding the known routes by over 60,000 miles (100,000 kilometers) and offering unprecedented insight into the empire’s interconnectedness.

The project, detailed in a study published today, November 6, 2025, in the journal Scientific Data, utilized historical records, archaeological data, topographic maps, and remote sensing to create a digital atlas called Itiner-e. The resulting map encompasses nearly 186,000 miles (300,000 km) of roads across Europe, the Near East, and North Africa – double the length of previously available maps. This discovery highlights the sophisticated infrastructure that underpinned Roman power and facilitated its expansion.

Researchers focused on the often-overlooked “country lanes” alongside the major highways, revealing a far more comprehensive network than previously understood. “The 200-year research history on Roman roads has focused strongly on these Roman ‘highways’ if you will, at the expense of our knowledge about the unnamed roads, the ‘country lanes,’” explained archaeologist Tom Brughmans of Aarhus University in Denmark. The team believes this network wasn’t just for travel, but played a crucial role in the spread of everything from trade and economic growth to disease and religious ideas. For example, mapping the roads used during the Antonine Plague, which began in A.D. 165, provides a 2,000-year-old case study on the societal impact of pandemics, according to Brughmans.

Experts not involved in the study praised the project’s thoroughness and potential impact. Jeffrey Becker, a Mediterranean archaeologist at Binghamton University, noted the dataset’s value as a digital tool for understanding the Roman world, while acknowledging that gaps remain due to data availability and the challenges of identifying all Roman roads. Further research and archaeological excavation are planned to continue expanding the map and refining our understanding of this ancient infrastructure; you can learn more about Roman roads from Britannica.

Researchers anticipate significant additions to the map as new discoveries are made and encourage further investigation into historical gaps and potential excavation sites.