2026
2026 Trek Marlin Gen 3
The 2026 Trek Marlin Gen 3 sits more aggressive than most XC bikes, with a slacker head angle and a shorter rear center. The Marlin 4 Gen 3 build comes with Shimano CUES U2000 ESSA shifting and Bontrager Connection wheels.
Source: trekbikes.com. Checked .
Key facts
- Brand
- Trek
- Model
- Marlin
- Model year
- 2026
- Frame
- Gen 3
- Type
- XC
- Geometry labels
- XXS, XS, S, M, ML, L, and XL
- Drivetrain
- Varies by build
- Fork
- Varies by build
- Wheels
- Varies by build
- Geometry
- Some measurements unavailable
- Source
- trekbikes.com
- Checked
Geometry by size
| Measurement | XXS | XS | S | M | ML | L | XL |
|---|---|---|---|---|---|---|---|
| Reach(mm) | Not available | 390 | 415 | 440 | 455 | 470 | 495 |
| Stack(mm) | Not available | 563 | 572 | 609 | 614 | 618 | 637 |
| Head tube angle(°) | Not available | 66.5 | 66.5 | 66.5 | 66.5 | 66.5 | 66.5 |
| Seat tube angle(°) | Not available | 74 | 74 | 74 | 73.4 | 74 | 74 |
| Effective top tube(mm) | Not available | 551 | 579 | 615 | 631 | 647 | 678 |
| Chainstay length(mm) | 433 | 433 | 433 | 438 | 438 | 438 | 438 |
| Wheelbase(mm) | Not available | 1092 | 1121 | 1163 | 1180 | 1197 | 1230 |
| BB drop(mm) | 38 | 45 | 45 | 46 | 46 | 46 | 46 |
| Standover(mm) | Not available | 658 | 692 | 747 | 759 | 771 | 791 |
| Seat tube length(mm) | Not available | 340 | 370 | 420 | 435 | 450 | 500 |
| Head tube length(mm) | Not available | 90 | 100 | 105 | 110 | 115 | 135 |
| Stack-to-reach | Not available | 1.44 (from the manufacturer) | 1.38 (from the manufacturer) | 1.38 (from the manufacturer) | 1.35 (from the manufacturer) | 1.31 (from the manufacturer) | 1.29 (from the manufacturer) |
Requested. Requests decide what we research next.
Stock build
Marlin 4 Gen 3
Frame
Suspension
Drivetrain
Wheels & Tires
Brakes
Cockpit
Seatpost & Saddle
Keep your Marlin 4 Gen 3 in Quiver
Start from this build's stock parts, then record your upgrades. Review it before adding it to your garage.
Free on App StoreFree on Google PlayFree for your first bike, on iPhone and Android.Already have Quiver? Open this build
Marlin 5 Gen 3
Frame
Suspension
Drivetrain
Wheels & Tires
Brakes
Cockpit
Seatpost & Saddle
Keep your Marlin 5 Gen 3 in Quiver
Start from this build's stock parts, then record your upgrades. Review it before adding it to your garage.
Free on App StoreFree on Google PlayFree for your first bike, on iPhone and Android.Already have Quiver? Open this build
Marlin 6 Gen 3
The stock build is under review.
Keep your Marlin 6 Gen 3 in Quiver
Start from this build's stock parts, then record your upgrades. Review it before adding it to your garage.
Free on App StoreFree on Google PlayFree for your first bike, on iPhone and Android.Already have Quiver? Open this build
Marlin 7 Gen 3
Frame
Suspension
Drivetrain
Wheels & Tires
Brakes
Cockpit
Seatpost & Saddle
Keep your Marlin 7 Gen 3 in Quiver
Start from this build's stock parts, then record your upgrades. Review it before adding it to your garage.
Free on App StoreFree on Google PlayFree for your first bike, on iPhone and Android.Already have Quiver? Open this build
✓Sources agreeMManufacturer
Quick answers
- Which size or configuration labels have geometry for the 2026 Trek Marlin Gen 3?
- Geometry is listed for XXS, XS, S, M, ML, L, and XL.
- What are the reach and stack of the 2026 Trek Marlin Gen 3 in size M?
- In size M, reach is 440 mm and stack is 609 mm.
- What is the head tube angle of the 2026 Trek Marlin Gen 3?
- The head tube angle is 66.5 degrees in size M.
- What does the 2026 Trek Marlin 4 Gen 3 ship with?
- The stock build includes Trek Alpha Silver, SR Suntour XCE 28, Shimano Acera M315, and Bontrager Connection.
- Which years of the Trek Marlin are on Quiver?
- Quiver has the Trek Marlin for 2026, 2027, 2025, 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015, 2013, 2012, and 2011.
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