The road measures 37.43 miles long and would take a car obeying speed limits 57 minutes to travel its length.
The A509 is a A Road and is located in the Zone 5 Highways Region.
This is a true long-distance route, journeying through numerous towns like Loughton, MILTON KEYNES, Bradwell Common, Conniburrow, Campbell Park, Downs Barn, Downhead Park, Willen Park, Willen Lake, Fox Milne, Northfield, Broughton, Moulsoe, NEWPORT PAGNELL, Interchange Park, Sherington, Emberton, OLNEY, Warrington, Bozeat, Strixton, Wollaston, Little Irchester, KETTERING, Kettering Business Park, Kettering Venture Park, Pytchley, Isham, Little Harrowden, Great Harrowden, Park Farm Industrial Estate, Wilby, and WELLINGBOROUGH.
The road connects Buckinghamshire and Northamptonshire.