Historic roads and trails

Historic roads (or historic trails in the US and Canada) are paths or routes that have historical importance due to their use over a period of time. Examples exist from prehistoric times until the early 20th century. They include ancient trackways, long-lasting roads, important trade routes, and migration trails. Many historic routes, such as the Silk Road, the Amber Road, and the Royal Road of the Persian Empire, covered great distances and their impact on human settlements remain today.

The Post Track, a prehistoric causeway in the valley of the River Brue in the Somerset Levels, England, is one of the oldest known constructed trackways and dates from around 3800 BCE. The world's oldest known paved road was constructed in Egypt some time between 2600 and 2200 BC.

The Romans were the most significant road builders of the ancient world. At the peak of the Roman Empire there were more than 400,000 kilometres (250,000 miles) of roads, of which over 80,000 kilometres (50,000 mi) were stone-paved. Another empire, that of the Incas of pre-Columbian South America, also built an extensive and advanced transportation system.

Much later historic roads include the Red River Trails between Canada and the US, from the 19th century. Such pioneer trails often made use of ancient routes created by indigenous people.

Africa

The history of transport in Africa includes some of the earliest paved roads in the world, as well as vast trans-continental trade networks that operated for millennia without formal paving.