what are the names of other sports related to this?
Hang gliding, paragliding.
Gliding
The two air sports that are most closely related to gliding are hang gliding and paragliding
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 are they annual events? No, they are held every two years. are there training schools to learn this sport? No, there are clubs that provide training for new pilots. what challenges would you face while gliding? UNANSWERABLE
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Gliding [SEP] Related air sports
The two air sports that are most closely related to gliding are hang gliding and paragliding. Although all three sports rely on rising air, there are significant differences which are listed in detail in . The main difference is that both hang gliders and paragliders are simpler, less sophisticated and cheaper aircraft that use the pilot's feet as the undercarriage. All paragliders and most hang gliders have no protective structure around the pilot. However, the dividing line between basic gliders and sophisticated hang-gliders is becoming less distinct. For example, hang gliders typically use fabric wings, shaped over a framework, but hang gliders with rigid wings and three-axis controls are also available.