At this point the Skerne takes a southerly course and, for about five miles (8 km) as far south as Aycliffe, it runs roughly parallel to the motorway and the East Coast Main Line.
One major tributary of the Skerne is the Woodham Burn, which rises near Shildon and flows through Newton Aycliffe.
After this it passes close to Brafferton and the farmland where the famous Durham Ox was bred, before heading for Barmpton, Great Burdon and Haughton-le-Skerne on the outskirts of Darlington, The Skerne then flows underneath 17 bridges in Darlington, including the railway bridge built by the Stockton and Darlington Railway and crossed by the inaugural train in 1825.
To the south of Darlington the Skerne passes through South Park, and then, after flowing under the A66 bridge, leaves the town to flow through countryside for its last two miles (3 km), before joining the Tees at Hurworth Place.
[2] A 2 km stretch of the river running through the town of Darlington was improved including the formation of four new meanders, planting to strengthen banks, reshaping and narrowing of the bed, installation of footpaths and a planting scheme aimed to "bringing the countryside into town".