National Route 73 of the National Cycle Network is split into three sections. Between Lochranza and Brodick on Arran, Ardrossan and Kilmarnock, and between Newton Stewart and Stranraer in the far south west of Scotland.
Open Sections: The route is open and signed on roads between Lochranza and Brodick on the Isle of Arran.
Between Ardrossan and Kilmarnock the route is opened, signed and mainly traffic-free. This is known as the Cunninghame Cycleway and is a part of the Lochs & Glens (South) cycle route and connects with National Route 7 towards Ayr or Glasgow.
Caledeonian MacBrayne ferries operate between Brodick and Ardrossan and between Lochranza and Claonaig where you can join National Route 78.
Maps and leaflets for this route are detailed below the map:
Ardrossan to Kilmarnock and an interim route between Newton Stewart and Stranraer are shown on the Sustrans NN7B Lochs and Glens South cycle route map along with all of National Route 7 between Carlisle and Glasgow.
Ardrossan to Kilmarnock is also shown on the free "Cunninghame Cycleway" leaflet.