E9 European long distance path

The E9 European long distance path, E9 path or European Coastal Path (French: "Sentier Européen du Littoral") is one of the European long-distance paths, running for from Cabo de São Vicente in Portugal to Narva-Jõesuu in Estonia.
Portugal.
The path follows the western coasts of Portugal from Cabo de São Vicente. There are also some sections around Lisbon and it's possible that the Camino Portuguese Coastal Way could also become the E9. 
Spain.
The path follows the western coasts of Spain.
E9 often follows the GR footpaths in Spain.
France.
The path follows the northern and western coasts of France starting at Bray-Dunes on the Belgian border. The GR 120 runs from Dunkerque to Pas d'Authie, the GR 21 from Le Tréport to Le Havre, GR 223 from Le Havre via Cherbourg to Avranches where it divides into several smaller local trails. The GR 34 then continues from Mont St-Michel to Le Tour-du-Parc. The GR 8 re-starts the trail further south from Saint-Brevin-les-Pins to Sare in the Pyrenees incorporating a short coastal section of the GR 4.
England.
The path follows the southern coast to Plymouth in England, and then following the English south coast as far as Dover, where another ferry crossing returns the route to Calais in France. In England the path follows parts of the South West Coast Path, the Solent Way, the South Downs Way and the Saxon Shore Way paths. The British route itself includes an alternative route via the Isle of Wight.
Read more at LDWA website.
Belgium.
The path then follows the coast of Belgium.
Netherlands.
The path follows the coast of the Netherlands. Here it follows the Dutch North Sea Trail, which includes 5 successive trails: 
Germany.
The path crosses the base of the Jutland peninsula, before following the coast of the Baltic Sea.
Latvia.
See more here.
Estonia.
See more here and at the External Links below.