The road measures 11.57 miles long and would take a car obeying speed limits 18 minutes to travel its length.
The B3420 is a B Road and is located in the Zone 3 Highways Region.
This is a true long-distance route, journeying through numerous towns like Wherwell, Wherwell Wood, Newton Stacey, Chilbolton, Sutton Scotney, and WINCHESTER.
The road connects Hampshire and Hampshire.