The road enters Derbyshire and the Derbyshire Dales district where it crosses the River Dove over the Hanging Bridge near the junction with the B5032 at Mayfield close to the "Queens Arms Hotel". The £3 million Ashbourne Relief Road opened in October 1994. There is a roundabout for the exit to Ashbourne and one with the A515. The road climbs up the side of the Dove Valley, and there is a central overtaking/crawler lane. The roundabout with the eastern exit to Ashbourne is near an old airfield which is now an industrial estate. The area around the next section of road to Derby has links with Bonnie Prince Charlie. It passes through Brailsford and the "Rose and Crown" and at Kirk Langley, there is a junction with the B5020 for Mickleover.