The road measures 19.18 miles long and would take a car obeying speed limits 35 minutes to travel its length.
The A640 is a A Road and is located in the Zone 6 Highways Region.
This is a true long-distance route, journeying through numerous towns like ROCHDALE, Firgrove, Milnrow, Newhey, Denshaw, Scammonden, Stainland, Outlane, and HUDDERSFIELD.
The road connects Greater Manchester and West Yorkshire.