The road measures 15.17 miles long and would take a car obeying speed limits 20 minutes to travel its length.
The B738 is a B Road and is located in the Zone 7 Highways Region.
This is a true long-distance route, journeying through numerous towns like Portpatrick, Leswalt, STRANRAER, Ervie, and Kirkcolm.
The road is located entirely within Wigtown.