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Roman roads map of Britain
Waystone shows the Roman road network compiled by the Roman Roads Research Association, with each length graded by how certain its course is, and the Roman forts, camps and towns along it. Lay it over the LiDAR to see the raised bank (the agger) where a road survives as an earthwork.
What the map shows
The roads come from Digital Britannia, the Roman Roads Research Association’s mapping of the network, used with permission. Each length carries the Association’s grade of evidence, from certain to conjectured, because many courses are known only in part. Roman forts, temporary camps and towns are shown as points.
Margary numbers
Ivan D. Margary numbered the roads in The Roman Roads of Britain (1955). The main routes have single numbers (Watling Street is 1, Ermine Street 2, the Fosse Way 5, Dere Street 8) and branches have letters after the number.
Finding a Roman road on LiDAR
Where a road survives as an earthwork it shows on the LiDAR as a low bank along a straight alignment, sometimes with side ditches, often changing direction on high ground. See what a Roman road looks like on LiDAR and Roman forts and sites on LiDAR.
Examples
Watling Street
Margary 1: Dover to London and on to Wroxeter. Here at High Cross, where it meets the Fosse Way.
Ermine Street
Margary 2: London to Lincoln and York. Here near Royston.
Fosse Way
Margary 5: Exeter to Lincoln. Here at Stow-on-the-Wold.
Dere Street
Margary 8: York to Corbridge and on into Scotland. Here at Corbridge.
Questions
Is it free?
Yes. The map is free to use in a browser, with nothing to install.
How accurate are the routes?
Each length is graded by the Roman Roads Research Association. Some courses are certain from excavation or surviving earthworks; others are projected between known points.
Can I find Roman roads near me?
Use LiDAR of my area or open the map at your town with the Roman roads layer on.
Sources
- Roman roads: Digital Britannia © Mike Haken / Roman Roads Research Association, used with permission.
- Margary, I. D. (1955). The Roman Roads of Britain. London: Phoenix House.
Last updated 2026-10-16.