The road measures 12.42 miles long and would take a car obeying speed limits 21 minutes to travel its length.
The B651 is a B Road and is located in the Zone 6 Highways Region.
This is a true long-distance route, journeying through numerous towns like Sandridge, ST. ALBANS, Wheathampstead, Kimpton, Whitwell, St. Pauls Walden, Preston, and Langley.
The road is located entirely within Hertfordshire.