The opening ceremony of the World Championships Predator Boat Fishing with Lures will take place in Lanesboro and Ballyleague this evening, Thursday.
A parade will take place through the town from the Community College on the Ballymahon Road to the Strokestown Road junction in Ballyleage at 6pm.
Motorists are advised of delays in the area between 6pm and 7pm.
Organisers and An Garda Síochána urge caution on all motorists as there are large numbers of children involved in the parade.
Motorists are also encouraged to be patient, as there are some 400 people taking part in the parade, including the Longford Junior Ladies All-Ireland winning team and successful teams from St Faithleach's and Shannon Gaels.