Traditionally, the Four-day March of the Yser takes place in the third week of August. The Four-day March of the Yser is an international march, organized by the Belgian Defense Forces. This annual 'military exercise' is open to civilians and military personnel from home and abroad. During this walking event the victims of WWI and WWII will be remembered.
Walkers get to know the historical and touristic value of the Westhoek in a pleasant way. The first walking day takes place in the area of Nieuwpoort, Koksijde and Oostduinkerke. Traditionally, the places of arrival on the following days are in Poperinge, Diksmuide and Ypres.