Trek Checkpoint ALR 4 Women's

A race-ready gravel bike from 2019, made in 4 sizes from 49 to 56.

Size

Stack 549 mmReach 379 mm

Geometry

Trek Checkpoint ALR 4 Women's geometry by frame size
Size
Fit
Stack (mm)How high the front sits	532	549	567	586
Reach (mm)How far forward the bars start	373	379	383	387
Stack ÷ reach Higher = more upright	1.43	1.45	1.48	1.51
Top tube (effective) (mm)Horizontal top-tube length	515	536	551	566
Seat tube angle Saddle position over the pedals	75°	74°	73.5°	73°
Seat tube length (mm)Frame size reference	490	520	540	560
Head tube length (mm)Front-end height	90	107	126	145
Standover (mm)Clearance when you stop	749	770	789	808
Handling
Head tube angle Steeper = quicker steering	71.4°	71.6°	71.8°	72.2°
Fork offset (mm)Fork rake	49	49	49	49
Trail (mm)More = steadier steering	66	65	64	61
Wheelbase (mm)Longer = more stable	995	1005	1014	1020
Chainstay (mm)Shorter = snappier	425	425	425	425
BB drop (mm)More = lower centre of gravity	78	78	76	76
BB height (mm)Pedal clearance in corners	258	258	260	260
Front centre (mm)Room for your toes	582	592	601	607
Other
Weight (kg)Complete bike, as published	22	22	22	22

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

A racy stance with road-bike efficiency on fast, mixed surfaces.

Size 52 is lower and longer than 69% of the 106 gravel frames we track.

The closest gravel frames from other ranges, against size 52 here.

Bikes with a similar fit, compared with size 52 of this bike
Bike	Size	Stack	Reach
Specialized Crux Comp - Shimano GRX2026Stack −2 mm, reach +3 mm	52	−2 mm	+3 mm
Cervelo Áspero-52026Stack +1 mm, reach +7 mm	54	+1 mm	+7 mm
Romet Aspre 22024Stack +4 mm, reach +7 mm	M	+4 mm	+7 mm
Cervelo R5-CX2026Stack −9 mm, reach +1 mm	54	−9 mm	+1 mm
Cannondale SuperX 12023Stack +6 mm, reach −1 mm	54	+6 mm	−1 mm
Canyon Grail CF 8 1by2025Stack +7 mm, reach +6 mm	XS	+7 mm	+6 mm

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