Trek Checkpoint ALR 5 Gen 3 2026 - Gravel Bike
The Trek Checkpoint ALR 5 Gen 3 is a do-it-all gravel bike that’s been purpose-built for exploring further, carrying more, and embracing rougher routes. Whether you're heading out for a long-distance bikepacking trip or just cruising gravel tracks on the weekend, it offers a stable, responsive ride with plenty of scope for customisation.
Key Features:
- 300 Series Alpha Aluminium frame with endurance geometry and clearance for 50 mm tyres
- Full carbon fork with rack and mudguard mounts for extra load-carrying flexibility
- SRAM Apex XPLR 12-speed drivetrain with 11-44T wide-range cassette
- SRAM Apex D1 hydraulic disc brakes with flat-mount callipers
- Bontrager Paradigm 23 Tubeless Ready alloy wheels
- Bontrager Girona Pro 700x42 mm tyres with GR tread and puncture protection
- Frame bag, rack and fender mounts for adventure-ready versatility
- Available with 0% APR finance
The frame is made from Trek’s 300 Series Alpha Aluminium, known for being both lightweight and strong. The geometry is tuned for all-day comfort, with a slightly longer wheelbase and slacker angles to help it stay composed on loose terrain. With tyre clearance up to 50 mm, you’ve got the freedom to run wider rubber for added grip and comfort.
Up front, the full carbon fork absorbs vibration and adds mounting points for extra gear, including racks and mudguards. Combined with frame bag mounts and top tube mounts, the Checkpoint ALR 5 is ready for everything from fast gravel commutes to multi-day adventures.
The bike is equipped with SRAM Apex XPLR 12-speed shifting, offering crisp, cable-free performance and a wide 11–44T cassette for conquering varied gradients. Braking is handled by SRAM Apex D1 hydraulic disc brakes, giving reliable stopping power no matter the conditions.
Wheels are Bontrager Paradigm 23 alloy rims, set up tubeless-ready out of the box and wrapped in Bontrager Girona Pro 700x42 mm tyres, which feature a Gravel Ready tread and puncture protection to keep you rolling on loose and rocky ground.
Finished with Trek’s Versatility-focused detailing, such as the 3S chain keeper, T47 bottom bracket, and UDH-compatible rear dropout, the Checkpoint ALR 5 is a modern gravel bike that balances comfort, performance and adaptability.
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 | SRAM Apex D1 hydraulic disc, flat mount, front caliper // SRAM Apex D1 hydraulic disc, flat mount |
| Rear Brake | SRAM Apex D1 hydraulic disc, flat mount, front caliper // SRAM Apex D1 hydraulic disc, flat mount |
| Brake Lever | SRAM Apex |
| Rear Mech | SRAM Apex XPLR, 44T max cog |
| Shifters | SRAM Apex, 12 speed |
| Speed | 12 |
| 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 |
| Saddle | Verse Short Comp, steel rails, 145 mm width |
| Chainset | SRAM Apex 1, 40T, DUB Wide |
| Bottom Bracket | SRAM DUB Wide, T47 threaded, internal bearing |
| Chain | SRAM Apex, 12-speed |
| Cassette | SRAM XPLR PG-1231, 11-44, 12-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 5 Gen 3 2026 - Gravel Bike
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