Trek Marlin 2026 geometry
Size chart for fitting. If this bike already feels right, find others with a similar riding position (size L). Category: mtb-trail.
| Size | Stack | Reach | Head tube angle | Seat tube angle | Chainstay | Wheelbase | BB drop |
|---|---|---|---|---|---|---|---|
| L | 636 mm | 450 mm | 66.5° | 74.0° | 438 mm | 1179 mm | 55 mm |
| M | 616 mm | 425 mm | 66.5° | 74.0° | 438 mm | 1149 mm | 55 mm |
| S | 596 mm | 400 mm | 66.5° | 74.0° | 438 mm | 1119 mm | 55 mm |
| XL | 656 mm | 475 mm | 66.5° | 74.0° | 438 mm | 1209 mm | 55 mm |
| XS | 576 mm | 375 mm | 66.5° | 74.0° | 438 mm | 1089 mm | 55 mm |
| XXL | 671 mm | 495 mm | 66.5° | 74.0° | 438 mm | 1234 mm | 55 mm |
Similar bikes
Closest matches to this riding position — free, no login.
Size guidance
Stack and reach describe the frame's cockpit envelope better than traditional seat-tube sizing. If you know your preferred stack/reach from a bike that already fits, search within a few millimeters first, then check head angle and chainstay for handling feel. See the glossary for stack, reach, and HTA.