The road measures 23.06 miles long and would take a car obeying speed limits 53 minutes to travel its length.
The A646 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 BURNLEY, Cliviger, TODMORDEN, HEBDEN BRIDGE, Charlestown, Stubbing Holme, Hawksclough, Mytholmroyd, Luddendenfoot, HALIFAX, and SOWERBY BRIDGE.
The road connects Lancashire and West Yorkshire.