2027 Canyon Grand Canyon AL vs 2025 Giant Fathom
The L is the Giant Fathom size closest to your XL Canyon Grand Canyon AL. 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 Giant Fathom
Compared with the Canyon Grand Canyon AL in XL, the Giant Fathom in L places the top of the head tube 27 mm lower and 20 mm further back, relative to the bottom bracket. Its wheelbase is 31 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −27 mm
- Lower front end
- Frame reach
- −20 mm
- Shorter frame reach
- Wheelbase
- −31 mm
- Shorter: quicker to change direction
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
Only the Canyon Grand Canyon AL is drawn. The Giant Fathom numbers we have for size L are missing the chainstay length.
Geometry side by side
| Measurement | Canyon Grand Canyon AL XL | Giant Fathom L | Difference |
|---|---|---|---|
| Reach | 490 | 470 | −20 mm |
| Stack | 658 | 631 | −27 mm |
| Head tube angle | 66 | 66 | ±0.0° |
| Seat tube angle | 74.4 | 75 | +0.6° |
| Effective top tube | 666 | not listed | |
| Chainstay length | 435 | not listed | |
| Wheelbase | 1237 | 1206 | −31 mm |
| BB drop | 65 | not listed | |
| Standover | 789 | not listed | |
| Seat tube length | 500 | 465 | −35 mm |
| Head tube length | 145 | not listed |
Differences are the Giant Fathom minus the Canyon Grand Canyon AL. Full charts: 2027 Canyon Grand Canyon AL, 2025 Giant Fathom.
Where each sits in its class
Canyon Grand Canyon ALGiant Fathom
Each bike is ranked against the other trail 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 | Canyon Grand Canyon AL | Giant Fathom1 |
|---|---|---|
| Frame | not listed | Giant Fathom |
| Fork | not listed | Giant Crest 34 |
| Shifter | not listed | SRAM SX Eagle |
| Derailleur | not listed | SRAM NX Eagle SX |
| Cassette | not listed | SRAM PG-1150 SX |
| Chain | not listed | SRAM SX Eagle |
| Crankset | not listed | SRAM SX Eagle Powerspline |
| Chainring | not listed | SRAM SX Eagle |
| Bottom bracket | not listed | SRAM DUB GX |
| Wheelset | not listed | Giant AM |
| Tire | not listed | Maxxis Ardent Race |
| Brake | not listed | Shimano MT420, Shimano MT410 |
| Rotor | not listed | Shimano RT-26 |
| Handlebar | not listed | Giant Contact SL TR35 |
| Stem | not listed | Giant Contact SL |
| Dropper post | not listed | Giant Contact Switch |
| Saddle | not listed | Giant Romero |
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