Trek Checkpoint ALR Frameset
Trek / Checkpoint
Go farther. Take the long way home.
Checkpoint ALR Frameset is the perfect starting point for your dream aluminum gravel bike. Its 300 Series Alpha Aluminum frame features Gravel Endurance geometry to keep you comfortable through long miles, and a full carbon fork keeps things lightweight. Build it up as a bikepacking rig or spec it for your ultimate alloy gravel race bike, the world is your oyster.
Based on the bike's size chart. Your complimentary baseline fit in store dials in the rest.
Ship to store · free pickup, usually ready in 4–7 business days
Questions are welcome. No pressure, no bike jargon required.
The ride, not just the specs
There is a certain kind of freedom that starts when the pavement ends. The Checkpoint was built for exactly that feeling: comfortable enough to stay out longer, capable enough to keep going, and ready to carry what matters.
We love bikes that invite you to say yes to the extra mile. This is one of them.
What makes it special
The new Checkpoint ALR is equipped to carry everything you need with mounts on the frame and fork for front and rear racks, fenders, and Adventure Top Tube, Frame, and Triangle Bags. Plus, the new frame was optimized to fit extra hydration in addition to all your bags.
Designed with Gravel Endurance geometry with a higher stack and shorter reach for improved comfort and control on long days in the saddle.
Designed with 50mm (or 29 x 2.0)* tire clearance for more grip and comfort on challenging terrain.*As measured
For the detail-oriented
Tap any group to see every part.
Measurements in cm unless noted.
| Size | XS | S | M | ML | L | XL |
|---|---|---|---|---|---|---|
| Rider height | 4'8"–5'2" | 5'2"–5'5" | 5'5"–5'10" | 5'10"–6'2" | 6'2"–6'4" | 6'4"–6'8" |
| Seat tube (A on the drawing) | 44.5 | 48.0 | 50.5 | 53.0 | 55.0 | 57.5 |
| Seat tube angle (B on the drawing) | 74.1° | 73.7° | 73.2° | 72.8° | 72.5° | 72.1° |
| Head tube length (C on the drawing) | 9.6 | 11.7 | 14.0 | 16.2 | 18.1 | 20.1 |
| Head tube angle (D on the drawing) | 71.2° | 71.6° | 71.8° | 72.2° | 72.3° | 72.6° |
| Eff. top tube (E on the drawing) | 53.6 | 54.8 | 56.8 | 58.0 | 59.2 | 60.4 |
| BB drop (G on the drawing) | 7.8 | 7.8 | 7.6 | 7.6 | 7.4 | 7.4 |
| Chainstay length (H on the drawing) | 43.5 | 43.5 | 43.5 | 43.5 | 43.5 | 43.5 |
| Offset (I on the drawing) | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 |
| Trail (J on the drawing) | 7.4 | 7.1 | 7.0 | 6.7 | 6.6 | 6.5 |
| Wheelbase (K on the drawing) | 102.5 | 103.3 | 104.1 | 104.8 | 105.8 | 107.0 |
| Standover (L on the drawing) | 73.5 | 76.5 | 78.9 | 80.9 | 82.9 | 85.9 |
| Reach (M on the drawing) | 38.0 | 38.5 | 39.1 | 39.7 | 40.2 | 40.8 |
| Stack (N on the drawing) | 54.5 | 56.6 | 58.9 | 61.1 | 63.0 | 65.0 |
| Wheel size | 700c | 700c | 700c | 700c | 700c | 700c |
The Atlanta Cycling difference
Specs matter. But so does how a bike feels when you ride it. Our team is here to help you choose the right size, understand the details, and get comfortable before your first ride.
When you buy from Atlanta Cycling, you're not just getting a box with a bicycle in it. You're getting a 30-day money-back guarantee, a complimentary baseline fit, lifetime basic adjustments, and real people who want you to love every mile.
Four neighborhood stores. One shared passion.
Ansley. Alpharetta. Roswell. Vinings. Stop by, take a test ride, ask questions, and meet the people who will be here long after your first ride.
