2019 Trek Bikes Checkpoint ALR 4 52 cm
Build
700C/29 in × 35 mm
Insights
Somewhat 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 | 549mm |
| Reach | 379mm |
| Stack to Reach Ratio | 1.45:1 |
| Seat Tube Length, C-T | 520mm |
| Top Tube Length, Effective/Horizontal HT Top | 536mm |
| Top Tube Slope | 5.4deg |
| Head Tube Angle | 71.6deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 107mm |
| Bottom Bracket Drop | 78mm |
| Bottom Bracket Height | 268mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 417.8mm |
| Front-Center | 592.4mm |
| Front-Center Horizontal | 587.2mm |
| Wheelbase | 1005mm |
| Fork Offset/Rake | 49mm |
| Trail | 63.5mm mid/neutral |
| Mechanical Trail | 60.2mm |
| Wheel Flop | 19mm |
| Standover Height | 770mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 76.4mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 98mm |
ALR 4 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 35mm |
| Tire Outer Diameter | 692mm |
| Bike Length with Tires | 1697mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 162 cm to 169 cm |
| PBH | 76 cm to 79 cm |
Source:https://www.trekbikes.com/ie/en_IE/bikes/road-bikes/gravel-bikes/checkpoint/checkpoint-alr/checkpoint-alr-4/p/22628/