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Hadrian's Wall was 80 Roman miles or 117.5 km (73.0 mi) long; its width and height varied according to the construction materials that were available nearby.
Confidence votes 38.6K. Hadrian's wall was important in its own time as it served to define the borders of the Roman empire, even though Rome did penetrate further north at times. It was also a barrier that prevented the Caladonians from raiding the border settlements and farms.