Cervélo R5 vs Trek Madone Gen 8: geometry and fit comparison
Matched sizes, stack and reach deltas, and a fit check against your own body instead of guessing from two separate size charts.
The Cervélo R5 is built as a race geometry frame, the Trek Madone Gen 8 as a race geometry frame. Reach is nearly identical across matched sizes. Across matched sizes the Cervélo R5 and Trek Madone Gen 8 front ends are within a few millimetres of each other, so posture will depend more on cockpit setup than on the frame.
Switching from a Cervélo R5?
Your closest Trek Madone Gen 8 size, and what will still feel different about the position.
| You ride the Cervélo R5 in | Take the Trek Madone Gen 8 in | The position will feel |
|---|---|---|
| 48 | XS | 10.899999999999977 mm taller · 1.3000000000000114 mm longer |
| 51 | S | 9.799999999999955 mm taller · 1.5 mm longer |
| 54 | M | 1.3999999999999773 mm taller · 0.6999999999999886 mm longer |
| 56 | ML | 5.5 mm lower · 2.1000000000000227 mm shorter |
| 58 | L | 8.700000000000045 mm lower · 6.300000000000011 mm shorter |
| 61 | XL | 0.7000000000000455 mm lower · 6.300000000000011 mm shorter |
Which one fits you better?
Run the same measurements through both frames. The likely size and the full fit report can differ more than the spec sheets suggest.
What Cervélo R5 size fits you?
Get an instant frame estimate, then continue into the full fit report to check cockpit reach, bar drop, and setup risks before you buy.
No account needed for this check. The full report keeps this bike preselected.
What Trek Madone Gen 8 size fits you?
Get an instant frame estimate, then continue into the full fit report to check cockpit reach, bar drop, and setup risks before you buy.
No account needed for this check. The full report keeps this bike preselected.
FAQ
Which has the taller front end: Cervélo R5 or Trek Madone Gen 8?
Across matched sizes the Cervélo R5 and Trek Madone Gen 8 front ends are within a few millimetres of each other, so posture will depend more on cockpit setup than on the frame.
Can the same rider take different sizes on these two bikes?
Yes, and it happens often: frame labels are not standardized. Use the matched-size table for geometry, then run the fit check below with your own measurements for each bike.
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