2024 Trek Checkpoint ALR Gen 2 vs 2025 Rivendell Atlantis
The 55 is the Rivendell Atlantis size closest to your 61 Trek Checkpoint ALR Gen 2. 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 Gen 2 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 Gen 2 numbers we have for size 61 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Checkpoint ALR Gen 2 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 Gen 2. Full charts: 2024 Trek Checkpoint ALR Gen 2, 2025 Rivendell Atlantis.
Where each sits in its class
Trek Checkpoint ALR Gen 2Rivendell 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 Gen 2ALR 4 Gen 2 | Rivendell AtlantisAtlantis |
|---|---|---|
| Wheelset | Bontrager Paradigm | not listed |
| Tire | Bontrager Girona Pro | not listed |
| Handlebar | Bontrager Elite Gravel | not listed |
| Frame | not listed | Rivendell Atlantis |
| Fork | not listed | threaded |
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
