The road measures 6.08 miles long and would take a car obeying speed limits 8 minutes to travel its length.
The A3121 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 Ermington, Flete, Strode, Ludbrook, Ugborough, Avonwick, and Wrangaton.
The road is located entirely within Devon.