The road measures 6.01 miles long and would take a car obeying speed limits 13 minutes to travel its length.
The A408 is a A Road and is located in the Zone 4 Highways Region.
This is a true long-distance route, journeying through numerous towns like Uxbridge, Viewsley, Hillingdon, Hayes, West Drayton, Sipson, and Hamondsworth.
The road is located entirely within Greater London.