2026 Trek · MH
2026 Trek Marlin Gen 3 geometry
Full frame geometry for the 2026 Trek Marlin Gen 3, size by size — stack, reach, angles and tube lengths.
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Geometry by size
| Size | Stack (mm) | Reach (mm) | Seat angle (°) | Head angle (°) | Head tube (mm) | Top tube (mm) | Standover (mm) | BB drop (mm) | Chainstay (mm) | Wheelbase (mm) | Fork rake (mm) | Trail (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| XS | 563 | 390 | 73.8 | 66.5 | 90 | 551 | 658 | 45 | 433 | 1092 | 42 | 110 |
| S | 572 | 415 | 73.8 | 66.5 | 100 | 579 | 692 | 45 | 433 | 1121 | 42 | 110 |
| M | 609 | 440 | 73.4 | 66.5 | 105 | 615 | 747 | 60 | 438 | 1163 | 46 | 110 |
| ML | 614 | 455 | 73.4 | 66.5 | 110 | 631 | 759 | 60 | 438 | 1180 | 46 | 110 |
| L | 618 | 470 | 73.4 | 66.5 | 115 | 647 | 771 | 60 | 438 | 1197 | 46 | 110 |
| XL | 637 | 495 | 73.4 | 66.5 | 135 | 678 | 791 | 60 | 438 | 1230 | 46 | 110 |
| XXL | 651 | 520 | 73.4 | 66.5 | 150 | 707 | 816 | 60 | 438 | 1261 | 46 | 110 |
All measurements in millimetres unless marked (°) for angles.