Trek Checkpoint ALR 3

An all-road gravel bike from 2026, made in 6 sizes from XS to XL.

Size

Stack 589 mmReach 391 mm

Geometry

Trek Checkpoint ALR 3 geometry by frame size
Size
Fit
Stack (mm)How high the front sits	545	566	589	611	630	650
Reach (mm)How far forward the bars start	380	385	391	397	402	408
Stack ÷ reach Higher = more upright	1.43	1.47	1.51	1.54	1.57	1.59
Top tube (effective) (mm)Horizontal top-tube length	536	548	568	580	592	604
Seat tube angle Saddle position over the pedals	74.1°	73.7°	73.2°	72.8°	72.5°	72.1°
Seat tube length (mm)Frame size reference	490	520	540	560	580	610
Head tube length (mm)Front-end height	96	117	140	162	181	201
Standover (mm)Clearance when you stop	735	765	789	809	829	859
Handling
Head tube angle Steeper = quicker steering	71.2°	71.6°	71.8°	72.2°	72.3°	72.6°
Fork offset (mm)Fork rake	55	55	50	48	48	50
Trail (mm)More = steadier steering	74	71	70	67	66	65
Wheelbase (mm)Longer = more stable	1025	1033	1041	1048	1058	1070
Chainstay (mm)Shorter = snappier	435	435	435	435	435	435
BB drop (mm)More = lower centre of gravity	78	78	76	76	74	74
BB height (mm)Pedal clearance in corners	258	258	260	260	262	262
Front centre (mm)Room for your toes	602	610	617	624	634	646
Other
Weight (kg)Complete bike, as published	10	10	10	10	10	10

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

Quick enough for spirited riding, comfortable enough for long days on mixed terrain.

Size MD is more upright than 69% of the 106 gravel frames we track.

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

Bikes with a similar fit, compared with size MD of this bike
Bike	Size	Stack	Reach
Cube Nuroad Race FE2026Stack same, reach −1 mm	M	same	−1 mm
Giant Revolt Advanced 0 SE2026Stack −3 mm, reach −4 mm	M	−3 mm	−4 mm
MMR X-Grip-302026Stack same, reach −6 mm	L	same	−6 mm
MMR X-Grip 002026Stack same, reach −6 mm	L	same	−6 mm
Scott Speedster Gravel 202025Stack same, reach +1 mm	L/56	same	+1 mm
Cannondale SuperX 12026Stack +6 mm, reach +1 mm	58	+6 mm	+1 mm