The A685 is a road in Cumbria, England, that runs 28 miles (45 km) from Kendal to Brough.

It heads in a north-easterly direction to the village of Tebay and junction 38 of the M6 motorway.

From the M6 the A685 has primary status as it heads in an easterly and then north-easterly direction to the small town of Kirkby Stephen.

It then has a very short dual carriageway section to aid overtaking, prior to meeting the A66 just outside the small town of Brough, where it terminates.

From Newbiggin-on-Lune to Tebay the road follows the route of the former South Durham & Lancashire Union Railway.