In short:
- A gravel bike combines drop handlebars with wide 38 to 50 mm tyres to ride on roads and tracks alike.
- Its geometry is more stable than a road bike: longer wheelbase, lower bottom bracket, more upright position.
- Single-chainring drivetrains (1x12 or 1x13) are gaining ground thanks to their simplicity.
- Expect to spend between 1,000 and 3,000 euros for a quality complete bike.
Definition: what sets a gravel bike apart
The gravel bike was born in the United States, on the long unpaved roads of the Midwest. It keeps the road bike’s drop handlebars but takes much wider tyres, up to 50 mm on some frames.
Its geometry favours stability. The wheelbase often exceeds 1,020 mm, compared with around 990 mm for a road bike of the same size.
Leading models such as the Canyon Grizl, Specialized Diverge and Giant Revolt feature plenty of mounts for bottle cages, mudguards and bags.
Tyres, drivetrain and brakes
| Component | Common choice | Why |
|---|---|---|
| Tyres | 40 to 45 mm, tubeless | Grip and comfort, fewer punctures |
| Drivetrain | 1x12 or 2x12 | Simplicity with 1x, closer ratios with 2x |
| Brakes | Hydraulic discs | Stopping power in all weather |
| Handlebars | Flared 12 to 25 degrees | Control on rough descents |
A tubeless setup lets you ride at 2 to 2.5 bar, compared with 5 to 7 bar on the road. Comfort and grip improve significantly.
Who is the gravel bike for?
Gravel suits riders who want to escape busy roads, and travellers. It is the ideal base for a first bikepacking guide adventure.
It also appeals to mountain bikers looking for a faster bike on road links. For technical trails, a full-suspension vs hardtail mountain bike remains the better tool.
Before buying, checking the bike size chart is essential: gravel sizes are often slightly more compact than road sizes.
Frequently asked questions
What is a gravel bike?
A gravel bike is a drop-bar bike designed to ride on tarmac as well as dirt and gravel tracks. It stands out with 38 to 50 mm tyres, more stable geometry than a road bike, disc brakes and plenty of mounts for bags. A good gravel bike costs between 1,000 and 3,000 euros.
Gravel bike or road bike: which one to choose?
A road bike is faster on tarmac, a gravel bike is more versatile. For mixed riding with at least 30% off-road, gravel is the obvious choice. With a second wheelset fitted with 32 mm tyres, it becomes a very capable road bike.
What tyre width for a gravel bike?
Tyres from 40 to 45 mm offer the best compromise for all-round riding. 35 to 38 mm tyres suit smooth tracks, while 45 to 50 mm tyres suit rough terrain and bikepacking.