This article is about the Class III road numbered C11 maintained by Orkney Islands Council. For other roads numbered C11, see C11.
The C11 is the western end of the minor road approaching Stromness from the east. It starts at the roundabout on the A965, Ferry Road, and follows Cairston Road as it heads east as far as the junction with Howe Road and Garson Loan. Howe Road continues east to the A965, and is a full S2 route, but apparently unclassified. Garson Loan is a dead end which heads south past Stromness Academy, also serving a small industrial area and housing developments.