Gravel Bikes
Also known as adventure bikes, gravel bikes allow cyclists to get out on any terrain to ride comfortably over long distances. Designed to withstand all kinds of conditions and surfaces, gravel bikes need to be built to last which is why they're often made of the toughest materials around capable of withstanding all the bumps and jumps along the way.
That doesn't mean that they're large, heavy bikes though; brands like GT Bicycles manufacture their gravel bikes using lightweight but tough carbon frames to ensure that nothing will stand in your way. If you're the kind of rider that wants more from their rides, and doesn't mind going off the beaten track to get back to the main route later, than a gravel bike is the model for you.