2019 Trek Bikes Checkpoint AL 4 61 cm
Build
700C/29 in × 32 mm
Insights
Somewhat upright 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 | 637mm |
| Reach | 386mm |
| Stack to Reach Ratio | 1.65:1 |
| Seat Tube Length, Unknown | 567mm |
| Top Tube Length, Effective/Horizontal Center | 581mm |
| Top Tube Slope | 9.8deg |
| Head Tube Angle | 72.6deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 200mm |
| Bottom Bracket Drop | 74mm |
| Bottom Bracket Height | 269mm |
| Chainstay Length | 430mm |
| Chainstay Length Horizontal | 423.6mm |
| Front-Center | 619.9mm |
| Front-Center Horizontal | 615.4mm |
| Wheelbase | 1039mm |
| Fork Offset/Rake | 50mm |
| Trail | 55.1mm mid/neutral |
| Mechanical Trail | 52.6mm |
| Wheel Flop | 15.7mm |
| Standover Height | 837mm |
| Tire to Pedal Spindle Distance With 175 mm cranks | 101.9mm |
| Pedal Spindle to Ground Clearance With 175 mm cranks | 94mm |
AL 4 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 32mm |
| Tire Outer Diameter | 686mm |
| Bike Length with Tires | 1725mm |
| Crank Length | 175mm |
| Handlebar Width | 440mm |
| Stem Length | 110mm |
| Stem Angle | 7deg |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 185 cm to 191 cm |
Source:https://www.trekbikes.com/ca/en_CA/bikes/adventure-touring-bikes/checkpoint/checkpoint-al/checkpoint-al-4/p/24971/