2027 Trek Checkpoint ALR Gen 3 vs 2025 Marin Gestalt Base
The 56 is the Marin Gestalt Base size closest to your M Trek Checkpoint ALR Gen 3. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Marin Gestalt Base
Compared with the Trek Checkpoint ALR Gen 3 in M, the Marin Gestalt Base in 56 places the top of the head tube 12 mm higher and 4 mm further back, relative to the bottom bracket.
- Frame stack
- +12 mm
- Higher front end
- Frame reach
- −4 mm
- Shorter frame reach
- Wheelbase
- −1 mm
- About the same
- Head angle
- −0.3°
- About the same head angle
- Chainstays
- −3 mm
- Shorter: livelier
The two frames
We can't draw these frames yet. The Trek Checkpoint ALR Gen 3 numbers we have for size M are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Checkpoint ALR Gen 3 M | Marin Gestalt Base 56 | Difference |
|---|---|---|---|
| Reach | 391 | 387 | −4 mm |
| Stack | 589 | 601 | +12 mm |
| Head tube angle | 71.8° | 71.5 | −0.3° |
| Effective top tube | 568 | 565 | −3 mm |
| Chainstay length | 435 | 432 | −3 mm |
| Wheelbase | 1041 | 1040 | −1 mm |
| BB drop | 76 | 78 | +2 mm |
| Standover | 789 | 775 | −14 mm |
| Seat tube length | 505 | 520 | +15 mm |
| Head tube length | 140 | not listed | |
| Seat tube angle | not listed | 73.5 |
Differences are the Marin Gestalt Base minus the Trek Checkpoint ALR Gen 3. Full charts: 2027 Trek Checkpoint ALR Gen 3, 2025 Marin Gestalt Base.
Where each sits in its class
Trek Checkpoint ALR Gen 3Marin Gestalt Base
Each bike is ranked against the other gravel bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Trek Checkpoint ALR Gen 3ALR 3 Gen 3 | Marin Gestalt BaseBase |
|---|---|---|
| Fork | Trek Checkpoint | 6061 Aluminum, Straight-Blade, Post-Mount Disc |
| Shifter | Shimano CUES 10 | Shimano Claris |
| Derailleur | Shimano CUES U6000 GS | Shimano Claris |
| Cassette | Shimano CUES LG300 | SunRace 8-Speed, 11-32T |
| Chain | Shimano LG500 | KMC Z8 |
| Crankset | Shimano CUES U60301 | FSA Tempo |
| Tire | Bontrager Girona Comp | WTB Exposure Comp |
| Rim | Bontrager Paradigm 23 | not listed |
| Brake | Tektro C550 | Tektro MD-C400 |
| Rotor | Tektro centerlock | not listed |
| Handlebar | Bontrager Elite Gravel | Marin Butted Alloy, Compact 16º Flared Drop |
| Headset | Bontrager Expander Plug | not listed |
| Saddle | Trek Verse | Marin Beyond Road Concept Elite |
| Frame | not listed | Marin Gestalt |
| Bottom bracket | not listed | Sealed Bearing Square Taper |
| Wheelset | not listed | Marin Aluminum Double Wall, 21mm Inner, 22mm Tall |
| Seatpost | not listed | Marin Alloy, 27.2mm |
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
