2023 Trek Checkpoint ALR Driftless vs 2025 Rivendell Atlantis
The 50 is the Rivendell Atlantis size closest to your 54 Trek Checkpoint ALR Driftless. 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 Rivendell Atlantis
Compared with the Trek Checkpoint ALR Driftless in 54, the Rivendell Atlantis in 50 places the top of the head tube 5 mm lower and 14 mm further back, relative to the bottom bracket.
- Frame stack
- −5 mm
- Lower front end
- Frame reach
- −14 mm
- Shorter frame reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- −1.8°
- Slacker: calmer steering
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
We can't draw these frames yet. The Trek Checkpoint ALR Driftless numbers we have for size 54 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Checkpoint ALR Driftless 54 | Rivendell Atlantis 50 | Difference |
|---|---|---|---|
| Reach | 403 | 389 | −14 mm |
| Stack | 571 | 566 | −5 mm |
| Head tube angle | 71.8° | 70 | −1.8° |
| Effective top tube | 570 | not listed | |
| Chainstay length | 435 | not listed | |
| Wheelbase | 1041 | not listed | |
| BB drop | 76 | not listed | |
| Standover | 789 | not listed | |
| Seat tube length | 540 | 500 | −40 mm |
| Head tube length | 125 | not listed | |
| Seat tube angle | not listed | 72 |
Differences are the Rivendell Atlantis minus the Trek Checkpoint ALR Driftless. Full charts: 2023 Trek Checkpoint ALR Driftless, 2025 Rivendell Atlantis.
Where each sits in its class
Trek Checkpoint ALR DriftlessRivendell Atlantis
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 DriftlessALR 5 Driftless | Rivendell AtlantisAtlantis |
|---|---|---|
| Frame | Trek Alpha | Rivendell Atlantis |
| Fork | Trek Checkpoint | threaded |
| Derailleur | Shimano GRX RX810 | not listed |
| Wheelset | Bontrager Paradigm | not listed |
| Tire | Bontrager GR2 Team Issue | not listed |
| Brake | Shimano GRX | not listed |
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