are they annual events?
No, they are held every two years.
European Gliding Championships
The European Gliding Championships is a gliding competition held every two years.
how long do gliders stay in the air They can stay airborne for several hours. what is gliding? It is a recreational activity and competitive air sport in which pilots fly unpowered aircraft known as gliders or sailplanes using naturally occurring currents of rising air in the atmosphere to remain airborne. who created the first glider? The Germans when? In  the 1920s and 1930s how do they fly? Through air that is ascending as fast or faster than the glider itself is descending, thus gaining potential energy. what's the fastest they can go? UNANSWERABLE so you mean they use lift to fly? Yes, ridge lift, wave lift etc. how are they launched? Different methods, namely aerotowing, winch launching, bungee launch etc. what's the maximum distance they have flown? Up to 1,000 km what do you do to land? The pilot will 'land out' - choose a location where he can land safely without damaging the glider, the pilot, or property such as crops or livestock. has anybody thought of using an engine on them? Yes, some gliders are fitted with small power units and are known as motor gliders. is this considered a sport? Yes, a competitive air sport are professional competitions held for this? Yes, world and European Aerobatic competitions are held regularly where are they held? UNANSWERABLE
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European Gliding Championships [SEP] Introduction
The European Gliding Championships is a gliding competition held every two years. Gliding is a competitive sport and was even a demonstration sport at the 1936 Summer Olympics. It was due to become an official Olympic sport in the Helsinki Games in 1940. However since the war, gliding has not featured in the Olympics. For gliding, international competition has been provided by the World Gliding Championships since 1938 and also by the European Gliding Championships since 1982. The increased number of classes of glider means that it is no longer possible for all the classes to compete at the same location.