Trek
Checkpoint ALR 3 Gen 3 2026-2027
Checkpoint ALR 3 Gen 3 2026-2027
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Special Order Bike
Special Order Bike
This bike is not kept in store.
Lead time to pick-up is 10-14 days.
Checkpoint ALR 3 is an adventure-ready aluminum gravel bike built for exploring beyond the pavement.
Its modern endurance geometry keeps you comfortable over rough roads and long miles, while a carbon fork helps smooth out chatter and potholes.
With clearance for up to 50mm tires, 10-speed Shimano CUES shifting, mechanical disc brakes, and plenty of mounts for bags and gear, it’s ready for everything from gravel detours to weekend escapes.
How tall are you?
To measure your height, stand straight up, barefoot, with your back, heels, shoulders and head all touching a wall. While looking straight ahead, place a book or straight edge on your head and slowly push it against the wall. Your straight edge should be parallel with the floor. Mark the spot where the bottom of the book is touching the wall. The distance from the marked spot to the floor is your height.
What is your inseam?
How to measure: Stand barefoot with your back straight and against a wall. Tuck a ruler or something that extends to the floor between your legs. Using both hands, and keeping it level, pull the ruler up into your crotch as if you were sitting on the saddle. Measure the distance from the top edge of the ruler to the ground to find your inseam measurement. Your inseam is very important to your final bike size so please measure carefully.
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Details
Specifications
Frame
300 Series Alpha Aluminum, Internal cable routing, 3S chain keeper, T47, UDH, rack and fender mounts, integrated frame bag mounts, flat mount disc, 142x12mm chamfered thru axle
Fork
Trek Checkpoint, full carbon, tapered steerer, rack mounts, fender mounts, flat mount disc, 12x100mm thru axle
Weight
Weight
ML - 10.41 kg / 22.96 lbs (with TLR sealant, no tubes)
Weight limit
This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 275 pounds (125 kg).
Drivetrain
Shifter
Shimano CUES 10 Speed Right STU303010R
Rear derailleur
Shimano CUES U6000 GS
*Crank
Size: XS, S
Shimano CUES FCU60301, 40T ring, 165mm length
Size: M, ML
Shimano CUES FCU60301, 40T ring, 170mm length
Size: L, XL
Shimano CUES FCU60301, 40T ring, 172.5mm length
Bottom bracket
Praxis, T47 threaded, internal bearing
Cassette
Shimano CUES LG300, LINKGLIDE, 11-48, 10 speed
Chain
Shimano LG500
Max chainring size
1x:44 2x: 46/30
Wheels
Hub front
Bontrager alloy, sealed bearing, centerlock disc, 100x12mm thru axle
Skewer front
Bontrager Switch chamfered thru axle
Hub rear
Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142x12mm thru axle
Skewer rear
Bontrager Switch chamfered thru axle, removable lever
Rim
Bontrager Paradigm 23, Tubeless Ready, 24-hole, 23mm width, Presta valve
Spokes
14g stainless steel, black
Tire
Bontrager Girona Pro, Tubeless Ready, GR puncture protection, aramid bead, 60 tpi, 700x42mm
Tire part
Bontrager TLR sealant, 180 ml/6 oz
Max tire size
50mm without fenders, 42mm with fenders (as measured, see manual for details)
Components
Saddle
Verse Short Comp, steel rails, 145mm width
Seatpost
Bontrager alloy, 27.2mm, 12mm offset, 330mm length
*Handlebar
Size: XS, S
Bontrager Elite Gravel, alloy, 40cm width
Size: M, ML
Bontrager Elite Gravel, alloy, 42cm width
Size: L
Bontrager Elite Gravel, alloy, 44cm width
Size: XL
Bontrager Elite Gravel, alloy, 46cm width
Handlebar tape
Bontrager Supertack Perf tape
*Stem
Size: XS
Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 70mm length
Size: S, M
Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 80mm length
Size: ML, L
Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length
Size: XL
Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 100mm length
*Brake
Size: XS, S, M, ML, L, XL
Shimano CUES U3030
Size: XS, S, M, ML, L, XL
Tektro C550 mechanical disc brake, dual piston, flat mount 0 offset
Size: XS, S, M, ML, L, XL
Tektro C550 mechanical disc brake, dual piston, flat mount, No adaptor.
Brake rotor
Tektro, centerlock, 160mm
Rotor size
Max brake rotor sizes: 180mm front & rear
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, materials, and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.
Bike and frame weights are based off pre-production painted frames at time of publication. Weights may vary in final production.
Discounted Items Are Final Sale
Please visit our Return/Exchange Policy page for more information.
Shipping
This bike is not eligible for shipping
Size Chart
Geometry Chart
