Trek Madone SL geometryRoad · 2025 · 6 sizes, from XS to XL

The Trek Madone SL is a road bike available in 6 sizes, from XS to XL. Stack ranges from 507 to 610 mm and reach from 370 to 402 mm. Its position sits between racing and endurance.

Stack507–610mm

Reach370–402mm

Head angle71.6–73.9°

Chainstay length410–412mm

What size Madone SL do I need?

Enter the stack and reach of a bike that fits you well and we will tell you which size is closest and how to set it up.

Stack in mm Reach in mm Compare on Fitbikefy →

XSS 507 · R 370

SS 530 · R 378

MS 546 · R 384

MLS 562 · R 389

LS 582 · R 394

XLS 610 · R 402

Enter your stack and reach to see which size fits you best.

Geometry chart by size

Measurements in mm and degrees, as published by Trek. The ones that matter most for choosing a size are in bold.

Size	XS	S	M	ML	L	XL
Stack	507	530	546	562	582	610
Reach	370	378	384	389	394	402
Effective top tube	517	532	545	557	568	584
Head tube length	100	121	136	150	172	201
Head angle	71.6°	72.2°	72.9°	73.5°	73.8°	73.9°
Chainstay length	410	410	410	410	411	412
Wheelbase	971	976	981	980	990	1,007
Front centre	572	577	582	581	589	604
BB drop	72	72	70	70	68	68
Fork offset	50	45	45	40	40	40
Trail	61	62	58	59	57	57
Standover	704	734	762	790	820	863
Seat tube (method not stated)	404	440	476	512	548	609
Seat angle (method not stated)	73.8°	73.8°	73.6°	73.4°	73.4°	73.4°

Source: Trek official website · data from 11 Nov 2026.

Stack and reach of every size

Higher means a taller front end; further right means a longer reach. The blue dot is your search.

Character of each size

Compared with other road bikes. Further right means more of that quality.

Positionracing → relaxed

Steeringcalm → quick

Pedallingrearward → forward

Bottom brackethigh → low

Wheelbaselively → planted

Rear endstable → agile

Bikes with similar geometry (size M)

The closest size of other road models, by stack and reach.

ModelΔ stackΔ reach

Trek Madone SLR · M2026±0 mm±0 mmCompare →

Canyon Endurace CF SLX · XS2027−1 mm−1 mmCompare →

Cervélo Soloist · 542026−1 mm−1 mmCompare →

Specialized Tarmac SL8 · 542026−2 mm±0 mmCompare →

Specialized S-Works Tarmac SL9 · 542026−2 mm±0 mmCompare →

Specialized Tarmac SL9 S-Level · 542026−2 mm±0 mmCompare →

Madone SL or Madone SLR? In size M they have exactly the same stack and reach (546 / 384 mm): the difference is in the frame and build, not the position.

Frequently asked questions

What size Madone SL do I need?

It depends on your position, not just your height. The most reliable way is to compare the stack and reach of a bike that fits you with those of each size (from 507/370 mm in size XS to 610/402 mm in size XL). The size finder on this page shows the closest size and the stem and spacers you would need.

What are the stack and reach of the Madone SL in size M?

Stack of 546 mm and reach of 384 mm, with an effective top tube of 545 mm and a head angle of 72.9°.

Is the Madone SL a racing or an endurance bike?

In between. In size M its stack-to-reach ratio is at percentile 38 of road bikes: neither very low nor very tall.

Does it have the same geometry as the Madone SLR?

In size M, yes: same stack and reach. If one already fits you, the same size of the other will put you in the same position.