While it's called a glider, it is powered by a low powered engine. It's stall speed is roughly 52 MPH. In fact, it can do the Going the Distance challenge. For best chance, remove all the fuel in the 4 wing sections and release the gear shortly after starting to move. If you time it right and dont stall, you can get enough altitude to beat the challenge. Group 1 releases (rather launches) the gear off. For best results, let the engine wind up and launch, you should have built up enough momentom so that when you launch, you wont just stall and fall back down. Some working of pitch may be needed so dont just launch and be fat-dumb-and-happy because you may even out facing the ground. Also for ****s and giggles, i added a gun on the front, so have fun!