The Tabula Peutingeriana is a 13th century copy of a Roman road map from around the 4th or 5th century CE, judging by the place names on it. It is named for Konrad Peutinger, a man of letters from 16th-century Augsburg, who had bequeathed it to his great-nephew Markus Welser (the Welser clan was a famous banker family in Augsburg, and had an Innsbruck representative in Philippine.) It is a very unusual map in that the road lengths are consistent (“längentreu”) but not the areas between them. In this way it resembles a subway map, where all the rail lines extend in directions beneficial to the space of the map but not true to actual geography. The lands on the Tabula extend from the British Isles to the Ganges Valley in India.
I recently obtained a copy of Via Claudia Exkursionsführer (Via Claudia Excursion Guide) by Hermann J. Volkmann. It’s a rather academic booklet, put out by scholars of geography didactics, but not difficult to follow. To my delight, it shows with modern maps the presumed route of the Via Claudia from Augsburg to Füssen, almost to the meter, including information on where it is still accessible and where one has to detour.
Volkmann says some interesting things about the famously straight Roman roads and their representation on the Tabula Peutingeriana. On the map below you will see that they are drawn as straight lines with kinks. According to Volkmann, these kinks represent stages or segments on the journey, and each joint was probably recognisable by landmarks (grave mounds, viereckschanzen, rivers, lakes) or guesthouses, found at regular intervals along the road and offering bed and board, stalls and supply depots.
Only two travel segments of the Via Claudia can be found on the Tabula Peutingeriana; from Augusta vindelicum (two towers near the top left corner, above) to Da novalis, and from there to Abodiacum. After that there seems to be a detour somewhere* over to the Via Raetia**, which was built later and runs through Innsbruck and the Brenner Pass. Volkmann posits that the Via Raetia was the more important route at the time, so it would have made sense to include it and not the older, longer route.
Here are the stops between Augusta vindelicum (Augsburg, Bavaria) and Tridentum (Trento, Italy). I have included the names on the Tabula Peutingeriana, a known Roman name (if different), and the modern name for that place.
Augusta vindelicum — Augsburg
Da novalis — possibly Obermeiting
Avodiaco — Abodiacum— Epfach
Coveliacas — “Köchel”, at Murnauer Moos***.
Tartena — Parthanum — Partenkirchen
Scarbia — Klais, where Scharnitz Abbey once stood. (The story of the name Klais is connected to the Via Raetia.)
“Vetonina” — Veldidena — Innsbruck – Wilten
Matreio — Matreium — Matrei am Brenner
Vipiteno — Vipiteno (Sterzing)
Sublavione — Chiusa (Klaussen)
Pentedrusi — Pons Drusi — Bolzano (Bozen)
Tredente — Tridentum — Trento (Trient)
*An east-west Roman road from Salzburg to Kempten connected Epfach, on the Via Claudia, with Raisting, south of the Ammersee and on the Via Raetia. Possibly one simply detoured there.
** The name Via Raetia is a later invention, the Roman name for this road is forgotten, if indeed it had ever had a name.
***Other researchers point to the Echelsbacher Bridge near Bad Bayersoien, but this doesn’t make sense to me.