The road measures 33.06 miles long and would take a car obeying speed limits 45 minutes to travel its length.
The A4146 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 Caldecotte, Tilbrook, Walnut Tree, Browns Wood, Wavendon Gate, Kents Hill, Brinklow, Kingston, Monkston, Broughton, Middleton, Northfield, Atterbury, Little Brickhill, Eaton Leys, Bletchley, Stoke Hammond, Soulbury, LEIGHTON BUZZARD, Piccotts End, and HEMEL HEMPSTEAD.
The road passes through several counties, including Buckinghamshire, Bedfordshire, and Hertfordshire.