Trek Checkpoint ALR 3 Gen 3 2026 - Gravel Bike
The Trek Checkpoint ALR 3 Gen 3 is designed for riders who want one bike that can do it all, from gravel adventures and bikepacking to everyday commuting. Its 300 Series Alpha Aluminium frame combines durability with responsive handling, and with modern endurance geometry, it offers a stable and comfortable riding position that’s perfect for long days in the saddle. The frame also includes smart touches like internal cable routing for a clean look, a 3S chain keeper, and extensive mounting points for racks, mudguards, and frame bags. With clearance for tyres up to 50mm, you can adapt your setup for mixed surfaces, comfort, or speed.
Key Features:
- 300 Series Alpha Aluminium frame, endurance geometry, 50mm tyre clearance, bag mounts
- Full carbon fork with tapered steerer, rack and mudguard mounts
- Shimano CUES U6000 10-speed drivetrain with 40T chainset
- Tektro C550 mechanical disc brakes, dual piston design
- Bontrager Paradigm 23 tubeless-ready wheels
- Bontrager Girona Pro 700x42mm gravel tyres with GR tread
- Multiple mounts for racks, mudguards, and accessories
- Available with 0% APR finance
The bike is paired with a full carbon fork that absorbs vibrations and smooths out rough surfaces, keeping fatigue at bay on long rides. Rack and mudguard compatibility further enhance its versatility, allowing you to set it up for multi-day trips or all-weather commuting.
At the heart of the drivetrain is Shimano’s CUES U6000 10-speed system, offering crisp, reliable gear changes and a wide 11-48T cassette range to tackle everything from steep climbs to fast flats. The 40T chainring provides a balanced setup for gravel and road use, while the Praxis T47 threaded bottom bracket ensures long-lasting performance.
Stopping power comes from Tektro C550 mechanical disc brakes, with dual piston calipers that give you consistent, confident braking across gravel paths, descents, and city traffic. They’re also easy to maintain, making them a practical choice for mixed-use riding.
Rolling on Bontrager Paradigm 23 tubeless-ready wheels, the Checkpoint ALR 3 Gen 3 is ready for adventure straight out of the box. The wheels are paired with Bontrager Girona Pro 700x42mm tyres, built with a gravel-specific tread pattern and puncture protection for grip, speed, and peace of mind on varied terrain.
Finishing kit includes a Bontrager Elite Gravel alloy handlebar for stable control, a Verse Short Comp saddle for comfort, and a Blendr-compatible stem for neat accessory integration.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | 300 Series Alpha Aluminium, Internal cable routing, 3S chain keeper, T47, UDH, rack and mudguard mounts, integrated frame bag mounts, flat-mount disc, 142x12 mm chamfered thru axle |
| Fork | Trek Checkpoint, full carbon, tapered steerer, rack mounts, fender mounts, flat mount disc, 12x100mm thru axle |
| Stem | Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree |
| Bars | Bontrager Elite Gravel, alloy |
| Front Brake | Tektro C550 mechanical disc brake, dual piston, flat mount 0 offset // Shimano CUES U3030, 9-speed // Tektro C550 mechanical disc brake, dual piston, flat mount, No adaptor. |
| Rear Brake | Tektro C550 mechanical disc brake, dual piston, flat mount 0 offset // Shimano CUES U3030, 9-speed // Tektro C550 mechanical disc brake, dual piston, flat mount, No adaptor. |
| Rear Mech | Shimano CUES U6000 GS |
| Shifters | Shimano CUES 10 Speed Right STU303010R |
| Speed | 10 |
| Rims | Bontrager Paradigm 23, Tubeless Ready, 24-hole, 23 mm width, Presta valve |
| Front Hub | Bontrager alloy, sealed bearing, CentreLock disc, 100x12 mm thru axle |
| Rear Hub | Bontrager alloy, sealed bearing, CentreLock disc, Shimano 11-speed freehub, 142x12 mm thru axle |
| Front Tyre | Bontrager Girona Pro, Tubeless Ready, GR puncture protection, aramid bead, 60 tpi, 700x42 mm |
| Rear Tyre | Bontrager Girona Pro, Tubeless Ready, GR puncture protection, aramid bead, 60 tpi, 700x42 mm |
| Seat Post | Bontrager alloy, 27.2 mm, 12 mm offset, 330 mm length |
| Saddle | Verse Short Comp, steel rails, 145 mm width |
| Chainset | Shimano CUES FCU60301 , 40T ring |
| Bottom Bracket | Praxis, T47 threaded, internal bearing |
| Chain | Shimano LG500 |
| Cassette | Shimano CUES LG300, LINKGLIDE, 11-48, 10-speed |
Trek Checkpoint Gen 3 Size Chart
| Size | Height cm | Height Feet / Inches | Inseam cm | Inseam Inches |
|---|---|---|---|---|
| XS (49cm) | 143 - 158 cm | 4'8" - 5'2" | 67 - 74 cm | 26" - 29" |
| S (49-52cm) | 158 - 164 cm | 5'2" - 5'5" | 74 - 77 cm | 29" - 30" |
| M (52-54cm) | 164 - 177 cm | 5'5" - 5'10" | 77 - 83 cm | 30" - 33" |
| ML (56cm) | 177 - 188 cm | 5'10" - 6'2" | 83 - 88 cm | 33" - 35" |
| L (58cm) | 188 - 194 cm | 6'2" - 6'4" | 88 - 91 cm | 35" - 36" |
| XL (61cm) | 194 - 203 cm | 6'4" - 6'8" | 91 - 95 cm | 36" - 37" |
What size frame do I need if I am between sizes? - read here
Trek Checkpoint Gen 3 Geometry Chart
| Size | 49 cm | 52 cm | 54 cm | 56 cm | 58 cm | 61 cm |
|---|---|---|---|---|---|---|
| Stack | 535 | 556 | 579 | 601 | 620 | 640 |
| Reach | 380 | 386 | 391 | 397 | 402 | 408 |
| Head Tube Length | 86 | 106 | 130 | 151 | 171 | 191 |
| Head Tube Angle | 71.0° | 71.4° | 71.6° | 72.0° | 72.1° | 72.4° |
| Bottom Bracket Drop | 76 | 76 | 76 | 76 | 76 | 76 |
| Trail | 71 | 68 | 68 | 64 | 64 | 62 |
| Fork Rake/Offset | 49 | 49 | 49 | 49 | 49 | 49 |
| Chainstay Length | 430 | 430 | 430 | 430 | 430 | 430 |
| Wheelbase | 1011 | 1022 | 1034 | 1042 | 1052 | 1062 |
| Top Tube Length (horizontal) | 536 | 547 | 566 | 578 | 589 | 601 |
| Standover Height | 746 | 772 | 799 | 813 | 837 | 861 |
| Seat Tube Length | 445 | 480 | 505 | 530 | 550 | 575 |
| Seat Tube Angle | 74.0° | 74.0° | 73.3° | 73.3° | 73.3° | 73.3° |
| Effective Seat Tube Angle | 72.7° | 73.0° | 72.8° | 72.8° | 72.8° | 72.8° |
All measurements are in mm unless otherwise stated.
The above table shows the standard geometry for the bicycle as shipped, other geometry configurations may be available with certain bikes. Please contact us via Live Chat to find out more.
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Trek Checkpoint ALR 3 Gen 3 2026 - Gravel Bike
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