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It's right for you if...
Your idea of the perfect ride includes chasing the sunlight through a car-free landscape on a long dirt road. You ride for the experience of it, but you also need your bike to have the versatility to take on city commutes and daily around-town rides.
The tech you get
A 200 Series Alpha Aluminum frame with massive tire clearance, a carbon disc fork, 12mm thru axles, a 2x10 Shimano Tiagra drivetrain, fender and rack mounts, Shimano hydraulic disc brakes for all-weather stopping power, Tubeless Ready wheels, and 700x32 Bontrager R1 Hard-Case Lite tires.
The final word
If you're looking for adventure off the beaten path without breaking the bank, Checkpoint AL 4 is a great choice. This value-minded ride is built for epic gravel rides, but it's equally at home on city streets, your daily commute, and more!
favorite_borderWhy you'll love it
- This bike is exceedingly versatile and suited to a wide variety of ride styles, including gravel rides, bikepacking, and daily commutes
- Massive tire clearance means you can use tires up to 38c for extra traction and stability in any condition
- Mounts on the seat tube and both sides of the down tube make it easy to carry extra gear and water
- Internal routing protects your cables, even when the gravel gets muddy
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Features
200 Series Alpha Aluminum
Trek's high-performance road alloy, formed into sophisticated tube shapes for maximum strength and minimum weight.
Carbon fork
Lightweight fork with carbon fiber legs soaks up hand-numbing road vibration.
Flat Mount disc brakes
All-new Flat Mount disc brakes are more elegant, lighter, smaller, and cleaner than traditional disc brakes, providing superior performance and stopping power under harsh conditions.
Tubeless Ready rims
Bontrager TLR (Tubeless Ready) Road is the first fully integrated tubeless system for road wheels. When you go tubeless with TLR, you can run lower tire pressure for increased traction and comfort without the threat of pinch flats.
Blendr-compatible stem
Bontrager Blendr stem technology lets you clip your gear directly to the stem for clean looks, maximum user friendliness.
Learn more
Control Freak Cable Management
The lightest, quietest, most versatile cable management system allows any combination of shift, brake, lockout, and dropper post lines to be routed through the frame for clean looks and the ultimate custom setup.
Hidden fender mounts
Discreet mounts accommodate full-coverage fenders for added utility.
Rack mounts
Going for a long ride? Rack mounts make carrying accessories a breeze.
Specifications
-
Frameset
- Frame
- Alpha 200 series aluminum, tapered head-tube, flat-mount disc brakes, 12mm thru-axle, internal cable routing, w/rack mounts and hidden fender mounts
- Fork
- Checkpoint carbon disc, tapered steerer, flat mount disc brakes, rack mounts, hidden fender mounts, 12mm thru axle
-
Wheels
- Front hub
- Formula alloy disc, 12mm thru-axle, 24h
- Rear hub
- Formula alloy disc, 12mm thru-axle, 24h
- Rims
- Bontrager Affinity, Tubeless Ready, 24h
- Tires
- Bontrager R1 Hard-Case Lite, 700x32c
- Max tire size
- 38c Bontrager tires (with at least 4mm of clearance to frame)
-
Drivetrain
- Shifters
- Shimano Tiagra, 10 speed
- Front derailleur
- Shimano Tiagra
- Rear derailleur
- Shimano Tiagra
- Crank
- Shimano Tiagra, 50/34 (compact)
- Bottom bracket
- Sealed cartridge
- Cassette
- Shimano Tiagra, 11-32, 10 speed
- Chain
- Shimano Tiagra
- Pedals
- Not included
-
Components
- Saddle
- Bontrager Arvada Comp, steel rails
- Seatpost
- Bontrager Approved, alloy, 27.2mm
- Handlebar
- Bontrager Comp VR-C, 31.8mm
- Grips
- Bontrager tape
- Stem
- Bontrager Elite, 31.8mm, 7 degree, w/computer & light mounts
- Headset
- Integrated, cartridge bearing, sealed, 1-1/8˝ top, 1.5˝ bottom
- Brakeset
- Shimano RS405 flat mount hydraulic disc
-
Weight
- Weight
- 56cm - 10.56 kg / 23.28 lbs
- Weight limit
- This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 275 pounds (125 kg).
Sizing & fit
The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local Trek retailer.
Rider Height
Inseam
44
150.0 - 155.0 cm
4'11.1" - 5'1.0"
71.0 - 73.0 cm
28.0" - 28.7"
49
158.0 - 163.0 cm
5'2.2" - 5'4.2"
74.0 - 77.0 cm
29.1" - 30.3"
52
162.0 - 169.0 cm
5'3.8" - 5'6.5"
76.0 - 79.0 cm
29.9" - 31.1"
54
167.0 - 174.0 cm
5'5.7" - 5'8.5"
78.0 - 82.0 cm
30.7" - 32.3"
56
173.0 - 180.0 cm
5'8.1" - 5'10.9"
81.0 - 85.0 cm
31.9" - 33.5"
58
179.0 - 186.0 cm
5'10.5" - 6'1.2"
84.0 - 87.0 cm
33.1" - 34.3"
61
184.0 - 191.0 cm
6'0.4" - 6'3.2"
86.0 - 90.0 cm
33.9" - 35.4"
All measurements provided in cm unless otherwise noted.
| Frame size number | A — Seat tube | B — Seat tube angle | C — Head tube length | D — Head angle | E — Effective top tube | F — Bottom bracket height | G — Bottom bracket drop | H — Chainstay length | I — Offset | J — Trail | K — Wheelbase | L — Standover | M — Frame reach | N — Frame stack |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 44 cm | 39.0 | 75.5° | 9.0 | 70.6° | 50.5 | 27.5 | 8.0 | 43.0 | 50 | 7.2 | 100.2 | 68.5 | 36.8 | 53.1 |
| 49 cm | 44.0 | 75.0° | 10.0 | 71.4° | 51.8 | 27.7 | 7.8 | 43.0 | 50.0 | 6.6 | 100.5 | 72.3 | 37.3 | 54.1 |
| 52 cm | 47.5 | 74.0° | 12.0 | 71.7° | 53.7 | 27.7 | 7.8 | 43.0 | 50.0 | 64.6 | 101.1 | 75.5 | 37.6 | 56.1 |
| 54 cm | 50.0 | 73.5° | 13.5 | 71.8° | 54.8 | 27.9 | 7.6 | 43.0 | 50.0 | 6.4 | 101.8 | 77.5 | 37.8 | 57.4 |
| 56 cm | 52.5 | 73.0° | 15 | 72.2° | 56.0 | 27.9 | 7.6 | 43.0 | 50.0 | 6.1 | 102.1 | 79.4 | 38.0 | 59.0 |
| 58 cm | 54.8 | 73.0° | 17.0 | 72.3° | 56.8 | 28.1 | 7.4 | 43.0 | 50.0 | 6.1 | 102.8 | 81.6 | 38.2 | 60.7 |
| 61 cm | 56.7 | 73.0° | 20.0 | 72.6° | 58.1 | 28.1 | 7.4 | 43.0 | 50.0 | 5.9 | 103.9 | 83.7 | 38.6 | 63.7 |