2025 Trek Bikes Checkpoint ALR 4 52 cm
Build
700C/29 in × 40 mm
Insights
Very aggressive stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Trek Bikes Checkpoint
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 553mm |
| Reach | 399mm |
| Stack to Reach Ratio | 1.39:1 |
| Seat Tube Length, Unknown | 520mm |
| Top Tube Length, Effective/Horizontal Center | 555mm |
| Top Tube Slope | 5.7deg |
| Head Tube Angle | 71.6deg |
| Seat Tube Angle | 73.7deg |
| Head Tube Length | 105mm |
| Bottom Bracket Drop | 78mm |
| Bottom Bracket Height | 273mm |
| Chainstay Length | 435mm |
| Chainstay Length Horizontal | 428mm |
| Front-Center | 610.1mm |
| Front-Center Horizontal | 605.1mm |
| Wheelbase | 1033mm |
| Fork Offset/Rake | 45.6mm |
| Trail | 68.7mm high |
| Mechanical Trail | 65.2mm |
| Wheel Flop | 20.6mm |
| Standover Height | 765mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 89.1mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 103mm |
ALR 4 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 40mm |
| Tire Outer Diameter | 702mm |
| Bike Length with Tires | 1735mm |
| Crank Length | 170mm |
| Handlebar Width | 40cm |
| Stem Length | 80cm |
| Stem Angle | 7deg |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Rim |
Published Sizing Recommendations
| Height | 5 ft 4 in to 5 ft 6 in |
Source:https://www.trekbikes.com/us/en_US/bikes/bikepacking-touring-bikes/checkpoint/checkpoint-alr/checkpoint-alr-4/p/41513/?colorCode=grey