Road Bike Size Chart
See each brand’s road sizes for your height, then compare Trek’s published inseam ranges.
Find your size
Road · by height
Trek (the only brand here that publishes inseam)
Domane SLR: —
Road Bike Size Chart by Height
Compare the published labels for each model. The finder highlights every range that includes your height.
Trek
Domane SLR
| Height | Published size |
|---|---|
| ≈ 4′8.5″–5′2″143–158 cm | XS (47cm) |
| ≈ 5′2″–5′4″158–162 cm | S (50cm) |
| ≈ 5′4″–5′8″162–173 cm | M (52-54cm) |
| ≈ 5′8″–5′10.5″173–179 cm | ML (56cm) |
| ≈ 5′10.5″–6′2″179–188 cm | L (58cm) |
| ≈ 6′2″–6′6.5″188–199 cm | XL (60-62cm) |
Source: Trek Domane SLR. Fetched .
Specialized
Tarmac
| Height | Published size |
|---|---|
| ≈ 4′8″–5′1″142–155 cm | 44 |
| ≈ 5′1″–5′4″155–163 cm | 49 |
| ≈ 5′4″–5′7″163–170 cm | 52 |
| ≈ 5′7″–5′9″170–175 cm | 54 |
| ≈ 5′9″–5′11″175–180 cm | 56 |
| ≈ 5′11″–6′2″180–188 cm | 58 |
| ≈ 6′2″–6′5″188–196 cm | 61 |
Source: Specialized Tarmac. Fetched .
Giant
TCR Advanced Pro
| Height | Published size |
|---|---|
| ≈ 5′2″–5′6.5″157–169 cm | XS |
| ≈ 5′5″–5′9″165–175 cm | S |
| ≈ 5′7.5″–5′11.5″171–181 cm | M |
| ≈ 5′9.5″–6′1.5″177–187 cm | ML |
| ≈ 6′0″–6′4″183–193 cm | L |
| ≈ 6′2.5″–6′6.5″189–199 cm | XL |
Source: Giant TCR Advanced Pro. Fetched .
Defy Advanced
| Height | Published size |
|---|---|
| ≈ 5′3″–5′6″160–168 cm | XS |
| ≈ 5′5.5″–5′8.5″166–174 cm | S |
| ≈ 5′7.5″–5′11″172–180 cm | M |
| ≈ 5′10″–6′1″178–186 cm | ML |
| ≈ 6′0.5″–6′3.5″184–192 cm | L |
| ≈ 6′3″–6′6″190–198 cm | XL |
Source: Giant Defy Advanced. Fetched .
Cannondale
SuperSix EVO
| Height | Published size |
|---|---|
| ≈ 4′8.5″–5′0.5″144–154 cm | 44 |
| ≈ 5′0″–5′4″152–162 cm | 48 |
| ≈ 5′2″–5′5.5″157–167 cm | 50 |
| ≈ 5′5″–5′9″165–175 cm | 52 |
| ≈ 5′7″–5′11″170–180 cm | 54 |
| ≈ 5′9.5″–6′1″177–185 cm | 56 |
| ≈ 5′11.5″–6′4″182–193 cm | 58 |
| ≈ 6′3″–6′6.5″190–200 cm | 61 |
Source: Cannondale SuperSix EVO. Fetched .
Both endpoints are included. Overlaps and shared boundaries are kept as published. Imperial heights are approximate conversions; matching uses original cm endpoints without rounding. Giant publishes letter labels, with no frame cm conversion in this source.
Road Bike Size Chart by Inseam
Trek is the only brand here that publishes inseam. Use your barefoot cycling inseam. If it suggests a different size from height, compare standover clearance, reach, and stack on the model’s chart.
Trek
Domane SLR
| Inseam | Published size |
|---|---|
| ≈ 26.5–29″67–74 cm | XS (47cm) |
| ≈ 29–30″74–76 cm | S (50cm) |
| ≈ 30–32″76–81 cm | M (52-54cm) |
| ≈ 32–33″81–84 cm | ML (56cm) |
| ≈ 33–34.5″84–88 cm | L (58cm) |
| ≈ 34.5–39.5″88–100 cm | XL (60-62cm) |
Source: Trek Domane SLR. Fetched .
How to Measure Your Inseam
Your cycling inseam is longer than the inseam on your jeans. It takes two minutes and a hardback book.
- Stand barefoot against a wall with your feet comfortably apart.
- Pull a hardback book up between your legs. Spine up, pressed firmly like a saddle, and kept level.
- Measure from the floor to the top of the spine. Mark the wall if nobody can hold the tape. Repeat to check that your reading is consistent.
Between Road Bike Sizes?
A larger frame generally has more stack and reach than a smaller frame in the same model. The size label alone does not tell you how much taller or longer it will feel.
Compare the geometry
Look at reach and stack for your riding position, plus standover clearance for your inseam. A shorter stem or saddle adjustment does not make every frame fit.
Try both when possible
Check whether you can reach the bars and brake controls comfortably. Use a test ride or bike fit to decide which frame works with your proportions.
For the broader height ranges, return to the bike size chart. For measurement details, see how to measure bike size.
Road Bike Sizing for Women
Start with your height and inseam using the same charts above. Gender alone does not determine your frame size; leg length, torso length, and arm reach affect the fit.
Check the model’s geometry, then consider saddle shape, bar width, and reach to the controls. A women-specific label does not replace those checks.
Signs Your Road Bike Is the Wrong Size
Check these on a test ride. If you notice these signs, compare the fit of another size.
- Knees come close to the bars
- Lots of seatpost showing
- Cramped, hunched back
- Slight knee bend at the bottom
- Elbows relaxed, not locked
- Easy reach to the brakes
- Legs overreach the pedals
- Arms locked straight
- Little or no standover clearance
Frequently Asked Questions
What if my height and inseam suggest different road bike sizes?
Treat both ranges as starting points. Check standover clearance and compare the model’s reach and stack. If the two charts disagree, a test ride or bike fit is more useful than averaging the frame labels.
How should I choose between road bike sizes?
Compare the geometry of both sizes on the model you want. The larger frame generally has more stack and reach, but the difference depends on the brand. Check your standover clearance and preferred riding position before choosing.
Do women need a different road bike size chart?
Choose by height, inseam, and proportions rather than gender alone. Compare the specific frame’s geometry. Saddle shape, handlebar width, and reach to the controls also affect how the bike fits.