Route 14 - Sustrans.org.ukRoute 14 is an 87.9-mile route on the National Cycle Network, connecting Darlington to South Shields.routeShare this page This route is on the National Cycle Network. The route is described here travelling from Darlington to South Shields but is signposted in both directions. The route is entirely open with much of it traffic-free along disused railway paths. https://www.sustrans.org.uk/find-a-route-on-the-national-cycle-network/route-14