Trek Checkpoint ALR 4 Gen 3
An all-road gravel bike from 2026, made in 6 sizes from XS to XL.
Size
Stack 589 mmReach 391 mm
Geometry
| Size | ||||||
|---|---|---|---|---|---|---|
| Fit | ||||||
| Stack (mm)How high the front sits | 545 | 566 | 589 | 611 | 630 | 650 |
| Reach (mm)How far forward the bars start | 380 | 385 | 391 | 397 | 402 | 408 |
| Stack ÷ reach Higher = more upright | 1.43 | 1.47 | 1.51 | 1.54 | 1.57 | 1.59 |
| Top tube (effective) (mm)Horizontal top-tube length | 535 | 551 | 569 | 586 | 601 | 618 |
| Seat tube angle Saddle position over the pedals | 74.1° | 73.7° | 73.2° | 72.8° | 72.5° | 72.1° |
| Seat tube length (mm)Frame size reference | 445 | 480 | 505 | 530 | 550 | 575 |
| Head tube length (mm)Front-end height | 96 | 117 | 140 | 162 | 181 | 201 |
| Standover (mm)Clearance when you stop | 735 | 765 | 789 | 809 | 829 | 859 |
| Handling | ||||||
| Head tube angle Steeper = quicker steering | 71.2° | 71.6° | 71.8° | 72.2° | 72.3° | 72.6° |
| Fork offset (mm)Fork rake | 55 | 55 | 50 | 48 | 48 | 50 |
| Trail (mm)More = steadier steering | 74 | 71 | 70 | 67 | 66 | 65 |
| Wheelbase (mm)Longer = more stable | 1025 | 1033 | 1041 | 1048 | 1058 | 1070 |
| Chainstay (mm)Shorter = snappier | 435 | 435 | 435 | 435 | 435 | 435 |
| BB drop (mm)More = lower centre of gravity | 78 | 78 | 76 | 76 | 74 | 74 |
| BB height (mm)Pedal clearance in corners | 258 | 258 | 260 | 260 | 262 | 262 |
| Front centre (mm)Room for your toes | 602 | 610 | 617 | 624 | 634 | 646 |
Underlined values are calculated by BikeLens. A dash means the brand doesn't publish it.
How it rides
All-road
Quick enough for spirited riding, comfortable enough for long days on mixed terrain.
Handling, size MD
- Steering
- Neutral70 mm trail
- Wheelbase
- Balanced1041 mm
- Chainstays
- Balanced435 mm
- BB drop
- Typical76 mm
Bikes that fit like it
The closest gravel frames from other ranges, against size MD here.
| Bike | Size | Stack | Reach |
|---|---|---|---|
| Cube Nuroad Race FE2026Stack same, reach −1 mm | M | same | −1 mm |
| Giant Revolt Advanced 0 SE2026Stack −3 mm, reach −4 mm | M | −3 mm | −4 mm |
| MMR X-Grip-302026Stack same, reach −6 mm | L | same | −6 mm |
| MMR X-Grip 002026Stack same, reach −6 mm | L | same | −6 mm |
| Scott Speedster Gravel 202025Stack same, reach +1 mm | L/56 | same | +1 mm |
| Cannondale SuperX 12026Stack +6 mm, reach +1 mm | 58 | +6 mm | +1 mm |
Other versions
Same frame, different parts
These builds share this exact geometry, so they fit the same.