Study shows marvels of Roman roads: Network covered roughly 190,000 miles in empire

By the Editorial Team · Tuesday, September 22, 2026

A new study reveals that the Roman Empire’s road network, spanning about 190,000 miles across Europe, the Middle East, and North Africa, was more regionally decentralized than previously thought, with Constantinople serving as a more central hub than Rome for overland travel. This research highlights the roads’ lasting impact, as many routes remained vital through medieval times and have influenced modern highways across Europe.

A recent study has provided a comprehensive structural analysis of the Roman Empire’s extensive road network, revealing new insights into its scale, design, and enduring impact. Spanning approximately 190,000 miles, this network connected territories across Europe, the Middle East, and North Africa, facilitating transportation and communication in the ancient world.

The research, published on September 15 in the journal Nature Communications, challenges the common saying that "all roads lead to Rome." While Rome was historically considered the hub of the empire’s road system—anchored symbolically by the Milliarium Aureum, or Golden Milestone, in the Roman Forum—findings indicate that this was not entirely accurate. The study shows that the later imperial capital, Constantinople (modern-day Istanbul), was in fact more centrally located within the empire’s broader overland travel routes.

Classical archaeologist Tom Brughmans of Aarhus University in Denmark, who led the study, explained that while Rome was central to Mediterranean maritime routes, it was less central within the empire’s terrestrial infrastructure. Instead, many provincial capitals such as Ankara in Turkey, London in Britain, and Corinth in Greece were better positioned along the road network, supporting provincial governance and tax collection. Moreover, the most centrally located road on the Italian peninsula bypassed Rome entirely, running along the Adriatic coast.

Constructed mostly for practical use, the Roman roads were engineered for durability and efficiency. The surface often combined crushed stone, lime cement, gravel, and paving stones. Roman road construction favored straight lines to reduce travel times, but terrain frequently necessitated deviations, especially in mountainous or hilly regions. Areas with flatter topography, including parts of Belgium, northern France, and Italy’s Po Valley, tended to feature straighter roads like the famous Via Appia.

The Roman road network did not operate in isolation but was integrated with navigable rivers and sea lanes, creating a sophisticated continental transportation system. This allowed for a wide range of activities, from military movements to the spread of goods, ideas, and even diseases. Researchers noted that roads facilitated everyday activities such as commuting between farms and local markets, alongside the long-distance movement of people and commodities.

The study also highlighted the lasting legacy of these roads, many of which remained in use well beyond the fall of the Western Roman Empire in 476 AD and into the Byzantine period, which ended in 1453. Postdoctoral fellow Adam Pazout from the Autonomous University of Barcelona emphasized the persistence of Roman roads as the primary infrastructure for communication and travel throughout medieval Europe and the Near East, until the advent of railroads and highways centuries later.

A number of modern highways trace their origins to Roman routes. For example, the Via Augusta, which extended from Cadiz in southern Spain to the Pyrenees, corresponds closely with the contemporary N-340 motorway between Tarragona and Barcelona. Remnants such as the Arc de Bera triumphal arch still mark these ancient roads, underscoring the enduring imprint of Roman engineering on today’s transportation networks.

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