The road measures 15.66 miles long and would take a car obeying speed limits 29 minutes to travel its length.
The A340 is a A Road and is located in the Zone 3 Highways Region.
This is a true long-distance route, journeying through numerous towns like Aldermaston, Padworth, TADLEY, Pamber Green, Pamber End, Monk Sherborne, Sherborne St. John, BASINGSTOKE, Theale, Pangbourne, and Tidmarsh.
The road passes through several counties, including Berkshire, Hampshire, and Berkshire.