All-Road

What it means

The primary material used in frame construction, affecting weight, compliance, durability, and cost.

In practice

All-road bikes are offered across all frame materials, but carbon fiber dominates the mid-to-upper range for its tunable compliance and weight. Aluminum is the most common entry-level choice, often paired with a carbon fork to improve front-end comfort. Steel appears in models that lean toward the bikepacking end of all-road.

Compared to other types

All-road bikes use the same materials as other gravel subcategories but skew slightly more toward carbon and aluminum than bikepacking rigs (which favor steel/titanium) and slightly less toward carbon-only than gravel race bikes.

What it means

The widest tire the frame and fork can accommodate, measured in millimeters. Determines terrain capability and comfort potential.

In practice

All-road bikes typically accommodate tires between 35mm and 42mm wide, with some newer models stretching to 45mm. This range covers smooth gravel at speed (35-38mm) and rougher terrain with comfort (40-42mm). The 40mm mark is the practical sweet spot for most all-road riding.

Compared to other types

Less clearance than bikepacking/adventure bikes (45-57mm) which prioritize volume for comfort and floatation. More clearance than gravel race bikes (33-38mm) which prioritize aerodynamics and weight. All-road sits in the versatile middle.

What it means

The wheel diameter standard the frame supports. Many modern gravel bikes accept both 700c and 650b.

In practice

Most modern all-road frames are designed to accept both 700c and 650b wheel sizes. With 700c, riders typically run 35-40mm tires for fast gravel and road. With 650b, the same frame can accommodate 47mm+ tires for rougher terrain. This dual compatibility is a hallmark of the all-road category.

Compared to other types

Gravel race bikes often skip 650b compatibility to save weight and simplify design. Bikepacking bikes almost universally offer dual compatibility. All-road bikes strongly favor dual compatibility as a core value proposition.

What it means

The gear system configuration including number of chainrings and cassette range, critical for terrain versatility.

In practice

All-road bikes are split roughly evenly between 1x and 2x drivetrains. 2x systems (typically 46/30T or 48/31T chainrings with 11-34T or 11-36T cassettes) offer tighter gear steps ideal for pavement cadence matching. 1x systems (typically 40T or 42T chainring with 10-42T to 10-51T cassettes) offer simpler operation and better chain retention on rough terrain.

Compared to other types

Gravel race bikes increasingly favor 1x for simplicity and weight savings. Bikepacking bikes also favor 1x for chain security under load. All-road is the only subcategory where 2x remains equally popular because of the road-riding component.

What it means

The gear ratio of the easiest climbing gear, expressed as chainring teeth divided by largest cassette cog. Lower values enable easier climbing.

In practice

All-road bikes typically offer lowest gear ratios between 0.83 and 0.90. A common 2x setup with 30T inner ring and 34T largest cog yields 0.88. A 1x setup with 40T ring and 10-42T cassette yields 0.95 (too high for steep terrain), while 40T with 10-51T yields 0.78 (excellent for climbing).

Compared to other types

Gravel race bikes sometimes accept higher lowest ratios (0.90+) because strong riders power over climbs. Bikepacking bikes target lower ratios (0.68-0.80) for loaded climbing. All-road sits between, with 0.80-0.88 being the practical range.

What it means

The type of front impact absorption system, ranging from rigid to short-travel suspension forks.

In practice

The vast majority of all-road bikes come with rigid carbon forks that rely on material compliance and wide tire pressures for vibration absorption. This is the lightest, simplest, and most versatile option. Some all-road models offer Future Shock-style stem suspension or compatibility with micro-suspension forks as an option.

Compared to other types

Gravel race bikes almost exclusively use rigid carbon forks. Bikepacking bikes may use rigid steel forks for durability and mounting points. All-road mirrors the race approach with rigid carbon, though some models offer suspension options for rougher riders.

What it means

The ratio of frame stack height to reach length. Higher values indicate a more upright, endurance-oriented position. Key indicator of a gravel bike's intended riding style.

In practice

All-road bikes typically feature stack-to-reach ratios between 1.48 and 1.56, placing them firmly in the endurance geometry camp. This produces a riding position that is upright enough for comfort on long gravel stretches and visibility in traffic, yet low enough for efficient power transfer on pavement.

Compared to other types

Gravel race bikes range from 1.38-1.48 (lower, more aggressive). Bikepacking/adventure bikes range from 1.55-1.75 (higher, more upright). All-road occupies the comfortable middle, leaning slightly toward endurance.

What it means

Distance from bottom bracket center to rear axle. Affects stability, traction, and bikepacking bag clearance.

In practice

All-road bikes typically have chainstays between 425mm and 435mm, which balances responsive handling with stability on loose surfaces. This range also provides sufficient clearance for frame bags in the main triangle, making light bikepacking feasible.

Compared to other types

Gravel race bikes use shorter stays (415-425mm) for responsive handling. Bikepacking bikes use longer stays (435-460mm) for stability and bag clearance. All-road sits in the middle, with a slight bias toward the longer end for versatility.

What it means

The angle of the head tube from horizontal. Steeper angles create quicker steering; slacker angles add stability.

In practice

All-road bikes typically feature head tube angles between 71.0° and 72.0°, providing steering that is responsive enough for road riding and stable enough for gravel descents. This range works well with the 50-55mm trail figures common to all-road geometry.

Compared to other types

Gravel race bikes may use steeper angles (72-73°) for quicker steering response. Bikepacking bikes use slacker angles (69-71°) for loaded stability. All-road sits between, prioritizing balanced handling across surfaces.

What it means

The braking system type. Hydraulic disc brakes are the standard for gravel; flat-mount vs post-mount affects frame compatibility.

In practice

Modern all-road bikes almost universally feature hydraulic disc brakes with flat-mount calipers. This is the current standard for mid-to-high-end gravel, offering excellent modulation and consistent power in all conditions. 160mm rotors front and rear are typical, with some models offering 180mm front options for heavier riders or loaded use.

Compared to other types

All gravel subcategories have converged on hydraulic disc brakes as standard. Flat-mount dominates all-road and race categories. Post-mount appears on some bikepacking and MTB-influenced models. Mechanical disc is only found on budget all-road builds.

What it means

Total number of threaded mounting bosses on the frame and fork for bottles, racks, and fenders. Indicates bikepacking and touring capability.

In practice

All-road bikes typically feature 8-12 mounting points: two bottle cages inside the main triangle, a third under the downtube, fender eyelets, and rear rack mounts. Some models add fork blade mounts for additional bottles or accessories. This provides enough versatility for commuting, light bikepacking, and foul-weather riding without the excess bosses of dedicated touring bikes.

Compared to other types

Gravel race bikes minimize mounts (4-8 points) to save weight and maintain clean lines. Bikepacking bikes maximize mounts (12-20 points) for multi-day carrying capacity. All-road provides enough for practical versatility without over-building the frame.

What it means

The seatpost design, which significantly affects saddle compliance and off-road comfort on gravel terrain.

In practice

Most all-road bikes come with standard rigid seatposts, typically 27.2mm diameter in carbon or aluminum. The 27.2mm diameter provides some natural flex compared to larger diameters. Some models feature compliance seatposts (Cane Creek eeSilk, Ergon CF3, or proprietary designs) or offer dropper post options for riders who venture onto technical terrain.

Compared to other types

Gravel race bikes use standard rigid posts for weight savings. Bikepacking bikes increasingly feature compliance posts for long-distance comfort. All-road offers the widest range of options, with standard rigid as the default and compliance/dropper as common upgrades.

What it means

The outward angle of the drop sections from the hoods position. Flare improves control in the drops on rough terrain and widens the stance for stability.

In practice

All-road bikes typically feature handlebars with 8-16° of flare, which improves control in the drops on rough terrain without making the hoods position feel excessively wide. This range provides meaningful stability benefits on gravel while maintaining a natural hand position on road.

Compared to other types

Gravel race bikes may use minimal flare (0-8°) for aerodynamic efficiency. Bikepacking bikes often use more flare (16-25°) for maximum control with loaded front bags. All-road occupies the moderate middle that works well across surfaces.

What it means

Total weight of the complete bicycle without pedals or accessories. Affects acceleration, climbing, and handling.

In practice

All-road bikes typically weigh between 8.5kg and 9.8kg complete. Carbon fiber models with mid-range builds land around 8.5-9.2kg. Aluminum models with carbon forks come in at 9.0-9.8kg. Steel models range from 9.5-10.5kg. These weights include the mounting hardware and slightly beefier construction that all-road versatility demands.

Compared to other types

Gravel race bikes are lighter (7.5-8.5kg) due to minimized mounting points and race-oriented builds. Bikepacking bikes are heavier (9.5-12.5kg) due to reinforced frames and additional mounting hardware. All-road sits in the middle.

What it means

The bottom bracket shell standard affecting crank compatibility, maintenance ease, and frame stiffness.

In practice

All-road bikes use a mix of bottom bracket standards. BSA threaded remains common on aluminum and steel frames and is preferred for its creak-free reliability and ease of home maintenance. T47 is gaining traction as the ideal threaded standard that combines reliability with wide-shell stiffness. Press-fit standards (PF30, BB86) appear on some carbon frames for weight savings.

Compared to other types

All subcategories use similar BB standards. Gravel race bikes may favor press-fit for weight savings. Bikepacking bikes strongly favor threaded (BSA, T47) for field serviceability. All-road is split, with a trend toward threaded standards as riders prioritize reliability.

What it means

The front wheel axle standard, affecting wheel compatibility and stiffness. Thru-axles are standard on modern gravel bikes.

In practice

All-road bikes universally use 12x100mm front thru-axles, which is the current standard for road and gravel bikes. This provides excellent stiffness and consistent brake rotor alignment while offering the widest compatibility with aftermarket wheelsets. The 15x100mm MTB standard only appears on models with suspension forks.

Compared to other types

All gravel subcategories use 12x100mm as the default. Only gravel bikes with suspension forks use 15x100mm. This dimension is essentially constant across the all-road category.