The A30 is a major road in England, running south-west from London to Land's End. It is 284 miles (457 km) long. The road has been one of the most important British roads since the 17th century, when it was a major coaching route. It used to provide the most direct route from London to the South West; nowadays much of this function is performed by the M3 motorway and the A303 road. However, the section from Honiton to Land's End is a dual carriageway for most of its length and retains trunk road status.