The Grenaa Line (Danish: Grenaabanen) is a 68.9 km (42.8 mi) long standard gauge single track railway line in Denmark which runs between Aarhus and Grenaa through the peninsula of Djursland. The railway opened in 1876-1877. It is owned and maintained by Rail Net Denmark and served with passenger trains by the Danish State Railways (DSB). It now functions as a commuter rail service in the Aarhus area and carries 1 million passengers annually.