This article is about the Class III road numbered ZC3 maintained by Edinburgh Council.
For other roads numbered C3, see C3
The ZC3 starts on the A70, Lanark Road and heads north west along Inglis Green Road, immediately passing under the Slateford Aqueduct. Longford Road then leads it to a large roundabout on the A71, with the route continuing ahead on Saughton Road. After passing under the railway, it reaches Corstophine, turning sharp left in front of the church along the High Street and then Ladywell Road to reach the A701, Meadow Place Road at a signalised junction.