How long was Hadrian's Wall in Roman miles?

Hadrian's Wall was approximately 73 miles long, which corresponds closely to the choice of 75 Roman miles. This significant structure was built under Emperor Hadrian in the second century AD to defend the Roman frontier in Britain from the tribes to the north.

In Roman measurements, a Roman mile was slightly shorter than a modern mile, measuring about 4,841 meters or roughly 5,000 Roman paces. The length of Hadrian's Wall reflects the ambitious engineering and strategic military planning of the Roman Empire during its expansion. Understanding this context helps solidify why 75 Roman miles is the most accurate approximation given the historical evidence and measurements available.