Comparison of core differences

1. Tire and frame compatibility

All road bikes: Tire width is usually between 28-38 mm, frame design prioritizes aerodynamics, lightweight and paved road performance, tire clearance is limited (such as 34-42 mm), and 700c wheels are mainly compatible.

Gravel road bikes: Tire width is wider (35-57 mm), the frame can accommodate larger tire clearance (such as 45 mm or more), some models support 650b wheels to enhance off-road adaptability, and the frame structure emphasizes rigidity and load capacity.

2.Frame geometry and handling

All road bikes: The geometry is between traditional road bikes and gravel bikes, with shorter chainstays (such as 415 mm) and a slightly steeper head tube angle (about 71°), which takes into account both the sensitivity on paved roads and the stability on light unpaved roads.

Gravel road bikes: Longer chainstays (such as 465 mm), gentler head tube angles (about 70°), longer wheelbase, improved handling stability on bumpy roads, suitable for long-term adventure riding.

3. Transmission system and gear ratio

All road bikes: Mostly use 2x double-disc system (such as 50/34 chainrings with 11-32 flywheels), with a wide gear ratio range, suitable for fast switching on mixed roads.

Gravel road bikes: Prefer 1x single-disc system (such as 42T chainrings with 11-50T flywheels), simplifying maintenance and optimizing climbing ability on complex terrain.

4. Functional expandability

All road bikes: Some models have reserved fender and rack mounting holes, but the expandability is weaker than that of gravel bikes, and are more suitable for short-distance adventures or winter riding.

Gravel road bikes: The frames are generally equipped with multiple sets of screw holes, which support luggage racks, water bottle racks, bike bags and other equipment, and are suitable for multi-day long-distance travel or heavy-loaded adventures.

Applicable scenarios and user groups

All road bikes

Scenario: 80% paved roads + 20% light gravel roads, such as urban commuting, rural roads, and smooth gravel roads.

Users: Road bike enthusiasts who pursue a balance between speed and comfort, and hope that one bike can cover daily riding and occasional adventures.

Gravel road bikes Scenario: More than 50% unpaved roads, such as muddy trails, loose gravel roads, and mountain forest roads.

Users: Adventure cyclists, long-distance travelers, or commuters who need to deal with complex road conditions, focusing on versatility and durability.

Selection suggestions

Choose tire width according to riding conditions

<28mm: Pure paved road competition, choose traditional road bikes.

28-36mm: Light mixed roads, give priority to All road bikes.

36-45mm: Moderate off-road needs, gravel bikes are more suitable.

>46mm: Heavy off-road or long-distance adventure, must choose gravel bikes.

Consider the frame material and budget

Carbon fiber: lightweight, high rigidity, suitable for users who pursue performance, but the price is relatively high.

Aluminum alloy: cost-effective, suitable for users with limited budget or new to gravel riding.Drive system and maintenance costIf you need to frequently deal with steep slopes or muddy terrain, a 1x system gravel bike is more practical; if you prefer speed and gear ratio refinement, a 2x system All bike is better.

Summary

All road bikes are the product of road bikes extending to multi-function, while gravel bikes are closer to "crossovers between road and mountain bikes". The key to choosing lies in the complexity of the riding scene:

Prioritize all road bikes: mainly paved roads, taking into account light gravel roads, pursuing lightness and comfort.

Prioritize gravel road bikes: high off-road requirements, need to cope with technical terrain or multi-day heavy riding.

In addition, some models can cover both functions by changing tires or adjusting configurations, but the differences in frame geometry and scalability still need to be the core consideration.