2019 Trek

Checkpoint AL 4

An aluminum frame gravel bike with mid-range components and hydraulic disc brakes.
Compare the full range

MSRP$1,539
Weight23.3 lbs  
FrameAluminum
SuspensionRigid
ForkCarbon
Wheels700c Aluminum
Drivetrain2 × 10
GroupsetTiagra
BrakesHydraulic Disc
Where to Buy
Similar Bikes

For This Bike

Accessories
Top Comparison
Insights
Ride Feel

Based on frame geometry and build specs.

Rider Position
relaxedaggressive
Terrain
smoothrugged
Checkpoint AL 4
Other Gravel bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

39 mph

Checkpoint AL 4

36 mph

Similar Bikes

Highest gear

(descending)

Sizing
44cm

4'11" – 5'2"

49cm

5'2" – 5'5"

52cm

5'3" – 5'7"

54cm

5'5" – 5'9"

56cm

5'7" – 6'0"

58cm

5'10" – 6'2"

61cm

6'0" – 6'4"

Rider Fit Notes

None yet.

Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.

Reviews
Velo
Bike of the year: Trek Checkpoint SL 5

Dec 2020 · Ben Delaney

Gravel bikes abound, but this one checks all the boxes, and at a great price.

Read Review

Cycling News
Trek Checkpoint SL7 gravel bike - first ride review

Jun 2020 · Laura Weislo

On early impressions, Trek's flagship gravel bike, the Checkpoint SL7, looks perfect for seekers of versatility and adventure

Highs
  • Lightweight, agile and responsive ride

  • IsoSpeed shock adds comfort

  • Underbody protection for the eye-popping paint job

Lows
  • SRAM Force eTap AXS 1X drive not suited to mixed road/gravel

  • Top tube is too wide near the seat tube

  • Toe overlap in the smallest size

Read Review

Whistler Mountain Bike
2019 TREK Checkpoint SL6 Review

Mar 2020 · Dale Tiessen

Out of the saddle putting down maximum power into the Checkpoint, it feels like a nice carbon road bike.

Read Review

BikeRadar
Trek Checkpoint AL 4 review

Feb 2020 · Robin Wilmott

All-road versatility with refined road manners for a fine riding machine

Highs
  • Frame design and mounts, hydraulic Tiagra groupset

Lows
  • Chirpy mudguards

Read Review

BIKEPACKING.com
Trek Checkpoint Review (SL6): Dirt Road Rocketry

Nov 2018 · Joe Cruz

Joe tested the Trek Checkpoint SL6 on weekly fast roadie coffee shop rides, a 10-hr dirt randonee, and VT gravel/singletrack explorations. Here's the review

Highs
  • Feels like a road race bike

  • IsoSpeed coupler absolutely smooths out jolts

  • Thoughtful design touches, including a variety of bosses for cages, armor under the downtube, bosses for a gas tank bag

  • Very capable on tarmac alongside its gravel prowess

Lows
  • Feels like a road race bike

  • 650b conversion not recommended

  • Unusual routing can cause cable contact with knees depending on out of the saddle pedaling style; might also interfere with feed bags

  • Long inseam riders may reach the end of the saddle height adjustment

  • Purpose built for speed rather than maximal bikepacking versatility

Read Review

Flow Mountain Bike
Is Gravel the new Road? Updates and Upgrades to our Trek Checkpoint

Sep 2018

Trek’s first real dedicated gravel bike, the Checkpoint is a pretty cool beast, with loads of unique frame designs to give it a very distinct feel to its road bike brethren, cyclocross cousins or anything else in the catalogue. But, after a few rides on the type of terrain that it is built for, we saw …

Read Review

Bikerumor
Review: Trek Checkpoint SL 5 WSD gravel bike challenges a Quiver Queen’s throne

Aug 2018

The new Trek Checkpoint gravel bike covers all the bases off road and on, making it a versatile, adjustable option that could replace several of your bikes.

Read Review

Road Bike Action
Gravel Bike Test: Trek Checkpoint SL6

Jul 2018 · Troy Templin

Better late than never, Trek’s Checkpoint has arrived

Read Review

Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
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

Tire Clearance38c

Fork

Checkpoint carbon disc, tapered steerer, flat mount disc brakes, rack mounts, hidden fender mounts, 12mm thru axle

Bottom Bracket

Sealed cartridge

Headset

Integrated, cartridge bearing, sealed, 1-1/8˝ top, 1.5˝ bottom

Stem

Bontrager Elite, 31.8mm, 7 degree, w/computer & light mounts

Handlebar

Bontrager Comp VR-C, 31.8mm

Saddle

Bontrager Arvada Comp, steel rails

Seatpost

Bontrager Approved, alloy, 27.2mm

TypeRigid

Pedals

Not included

Grips

Bontrager tape

Groupset
Rear Derailleur

Shimano Tiagra

Front Derailleur

Shimano Tiagra

Crank

Shimano Tiagra, 50/34 (compact)

Shifters

Shimano Tiagra, 10 speed

Cassette

Shimano Tiagra, 11-32, 10 speed

Chain

Shimano Tiagra

Brakes

Shimano RS405 flat mount hydraulic disc

TypeHydraulic Disc

Wheels
Rims

Bontrager Affinity, Tubeless Ready, 24h

Front Hub

Formula alloy disc, 12mm thru-axle, 24h

Rear Hub

Formula alloy disc, 12mm thru-axle, 24h

Tires

Bontrager R1 Hard-Case Lite, 700x32c

Rider Notes
Riders Also Viewed

Last updated September 16
Not listed for 1,650 days