2023 Trek Checkpoint ALR vs 2025 Rivendell Atlantis
The 55 is the Rivendell Atlantis size closest to your 61 Trek Checkpoint ALR. 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 in 61, the Rivendell Atlantis in 55 places the top of the head tube 22 mm lower and 10 mm further back, relative to the bottom bracket.
- Frame stack
- −22 mm
- Lower front end
- Frame reach
- −10 mm
- Shorter frame reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- −2.6°
- 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 numbers we have for size 61 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Checkpoint ALR 61 | Rivendell Atlantis 55 | Difference |
|---|---|---|---|
| Reach | 417 | 407 | −10 mm |
| Stack | 639 | 617 | −22 mm |
| Head tube angle | 72.6° | 70 | −2.6° |
| Effective top tube | 617 | not listed | |
| Chainstay length | 435 | not listed | |
| Wheelbase | 1070 | not listed | |
| BB drop | 74 | 80 | +6 mm |
| Standover | 859 | not listed | |
| Seat tube length | 610 | 550 | −60 mm |
| Head tube length | 195 | not listed | |
| Seat tube angle | not listed | 72 |
Differences are the Rivendell Atlantis minus the Trek Checkpoint ALR. Full charts: 2023 Trek Checkpoint ALR, 2025 Rivendell Atlantis.
Where each sits in its class
Trek Checkpoint ALRRivendell 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 ALRALR 5 | Rivendell AtlantisAtlantis |
|---|---|---|
| Frame | Trek Alpha | Rivendell Atlantis |
| Fork | Trek Checkpoint | threaded |
| Shifter | Shimano GRX RX600 | not listed |
| Derailleur | Shimano GRX RX810/600 | not listed |
| Cassette | Shimano HG700 | not listed |
| Crankset | Shimano GRX RX600 | not listed |
| Wheelset | Bontrager Paradigm | not listed |
| Tire | Bontrager GR1 Team Issue | not listed |
| Brake | Shimano GRX | not listed |
| Handlebar | Bontrager GR Elite Alloy | not listed |
| Stem | Bontrager Elite Alloy | not listed |
| Seatpost | Bontrager Alloy | not listed |
| Saddle | fizik Argo | not listed |
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