What is gravel biking?
Gravel biking is riding mainly on unpaved roads, opening up large amounts of terrain, a standard road bike normally can't access. This is due to the tires being wider, with more volume and the frame geometry being more compliant and suited to rougher terrain. Gravel biking is the fastest growing cycling genre globally and has large high profile race events.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: What is gravel biking?
### Input: 
### Response: Gravel biking is riding mainly on unpaved roads, opening up large amounts of terrain, a standard road bike normally can't access. This is due to the tires being wider, with more volume and the frame geometry being more compliant and suited to rougher terrain. Gravel biking is the fastest growing cycling genre globally and has large high profile race events.