Gravel
Trek Checkpoint ALR Gen 3
2025 · 700c wheels · 6 sizes
Aluminium gravel and bikepacking frame with a full carbon fork, clearance for tyres up to 50 mm, and rack, mudguard and frame bag mounts. The numbers are Trek's published geometry for the Checkpoint ALR 5 Gen 3, with stock parts from that build. Trek prints no model year on the page; the Gen 3 platform launched for 2025.
I ride:
Size run
Published geometry by size. How each size rides and fits for your rider profile loads with the page.
| Size | XS | S | M | ML | L | XL |
|---|---|---|---|---|---|---|
| Stack (mm) | 545 | 566 | 589 | 611 | 630 | 650 |
| Reach (mm) | 380 | 385 | 391 | 397 | 402 | 408 |
| Head angle (°) | 71.2 | 71.6 | 71.8 | 72.2 | 72.3 | 72.6 |
| Seat angle (°) | 74.1 | 73.7 | 73.2 | 72.8 | 72.5 | 72.1 |