Giant Contend AR 1

An endurance road bike from 2026, made in 5 sizes from S to XL. Fits tyres up to 38 mm.

Size

Stack 595 mmReach 383 mm

Geometry

Giant Contend AR 1 geometry by frame size
Size
Fit
Stack (mm)How high the front sits	559	574	595	614	638
Reach (mm)How far forward the bars start	375	380	383	392	400
Stack ÷ reach Higher = more upright	1.49	1.51	1.55	1.57	1.59
Top tube (effective) (mm)Horizontal top-tube length	535	550	565	580	595
Seat tube angle Saddle position over the pedals	74°	73.5°	73°	73°	73°
Seat tube length (mm)Frame size reference	465	500	535	555	585
Head tube length (mm)Front-end height	135	150	170	190	215
Standover (mm)Clearance when you stop	759	783	810	829	856
Handling
Head tube angle Steeper = quicker steering	71.8°	72°	72.5°	72.5°	72.5°
Fork offset (mm)Fork rake	53	53	53	53	53
Trail (mm)More = steadier steering	61	60	56	56	56
Wheelbase (mm)Longer = more stable	1003	1011	1015	1031	1046
Chainstay (mm)Shorter = snappier	422	422	422	422	422
BB drop (mm)More = lower centre of gravity	80	80	80	80	80
BB height (mm)Pedal clearance in corners	256	256	256	256	256
Front centre (mm)Room for your toes	594	602	606	621	637

Underlined values are calculated by BikeLens. A dash means the brand doesn't publish it.

A taller, more upright position that stays comfortable on long days and rough roads.

Size ML is more upright than 95% of the 218 road frames we track.

The closest road frames from other ranges, against size ML here.

Bikes with a similar fit, compared with size ML of this bike
Bike	Size	Stack	Reach
Cube Attain C:62 Race2026Stack −4 mm, reach +2 mm	56	−4 mm	+2 mm
Bianchi Infinito 105 DI22026Stack +5 mm, reach −1 mm	57	+5 mm	−1 mm
Bmc Roadmachine TWO2026Stack same, reach +5 mm	56	same	+5 mm
Grind Grit2026Stack same, reach +5 mm	L	same	+5 mm
Canyon Endurace CFR AXS2026Stack −5 mm, reach −5 mm	M	−5 mm	−5 mm
Scott Speedster 302025Stack −2 mm, reach +2 mm	L/56	−2 mm	+2 mm

These builds share this exact geometry, so they fit the same.