There's the traditional RC glider, which either has no motor ... At 3D Lab Print, for example, you can buy RC plane plans and some of these kits also include the correct filament you'll need ...

[Matthew Heiskell] blew these numbers out of the water with a 10 hour 45 minute flight with an RC plane on battery power ... The airframe is a Phoenix 2400 motor glider, with a 2.4 m wingspan ...