Originally Posted by fizzer82
Is it that hard to explain? ... It sounds like, you launch a glider, hop in the back of a truck, and see how far you can fly the thing. Is that about it?
Nope, not anymore. It's how FAST you can fly it on a particular course. RC XC soaring has evolved to be as close to full-sized soaring as possible: best average speed on course wins. http://xcsoaring.com/organize.html
is an overview of what's involved in a typical XC contest. It's dated a bit, but it provides basic info.
Dieter Mahlein, ShredAir