The road measures 9.71 miles long and would take a car obeying speed limits 18 minutes to travel its length.
The A378 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 Thornfalcon, Wrantage, Fivehead, Curry Rivel, LANGPORT, Portway, Portfield, and Westover.
The road is located entirely within Somerset.